Authored By: Donavan Lowers
New York University
I. The Current Legal Framework: The Legal Foundations Governing Deadly Force and Self-Defense Under Texas Law
Chapter 9 of the Texas Penal Code establishes the statutory framework governing the lawful use of force in self-defense. Specifically, Section 9.31 authorizes an individual to use force when the actor reasonably believes such force is immediately necessary to protect against another person’s unlawful use or attempted use of force. A reasonable belief refers to one that an ordinary and prudent person would hold under the same or similar circumstances, rather than one based solely on the defendant’s personal perception. By adopting this objective standard, the Texas Legislature sought to balance an individual’s inherent right to personal protection with the State’s interest in preventing unnecessary violence. Nevertheless, the statute imposes important limitations. A defendant may not invoke self-defense if the evidence demonstrates that the defendant provoked the confrontation, willingly participated in mutual combat, or responded with force that exceeded what was reasonably necessary to neutralize the threat. Texas courts have consistently emphasized that self-defense is a legal justification rather than an unrestricted privilege to use violence whenever a confrontation occurs.
Section 9.32 governs the use of deadly force, defined as force that is intended or known by the actor to cause death or serious bodily injury. Because deadly force carries the greatest potential for irreversible harm, Texas law subjects its use to significantly stricter requirements than those governing ordinary force. The statute permits deadly force only when the actor reasonably believes such force is immediately necessary to prevent another person’s use or attempted use of unlawful deadly force, or to prevent the imminent commission of certain violent felonies, including murder, aggravated robbery, aggravated kidnapping, aggravated sexual assault, or robbery. The requirement of immediacy—often referred to as the doctrine of imminence—ensures that deadly force remains a measure of last resort rather than a response to speculative or future threats. Consequently, courts closely scrutinize whether the danger confronting the defendant existed at the precise moment deadly force was used.
II. Applying Texas Self-Defense Law: The Karmelo Anthony Prosecution
The prosecution alleged that Karmelo Anthony intentionally stabbed Austin Metcalf during a confrontation that began as a verbal dispute and quickly escalated into a physical altercation at a high school track meet in Frisco, Texas. According to prosecutors, Anthony’s decision to introduce a knife into an otherwise unarmed confrontation transformed the encounter into an unlawful use of deadly force. The State therefore argued that Anthony intentionally caused Metcalf’s death and that the evidence failed to establish the statutory elements necessary to justify his conduct under Texas self-defense law.
In contrast, defense counsel maintained that Anthony acted in lawful self-defense after reasonably believing that he faced an imminent threat of serious bodily injury. Self-defense constitutes a justification defense, meaning that although the defendant acknowledges engaging in the conduct alleged, the law excuses the conduct because it was reasonably necessary under the circumstances. The defense therefore sought to establish that Anthony’s use of deadly force satisfied the requirements of Sections 9.31 and 9.32 by demonstrating that his actions were immediately necessary to protect himself from an unlawful and imminent threat.
The central issue before the jury was not whether Anthony personally believed he was in danger, but whether an objectively reasonable person confronted with the same facts would have concluded that deadly force was immediately necessary. This distinction reflects one of the defining characteristics of modern self-defense law: courts evaluate claims of self-defense using an objective standard that limits reliance on purely subjective fear. Consequently, the jury’s responsibility extended beyond assessing Anthony’s testimony; jurors were required to examine the surrounding circumstances, the nature of the confrontation, the level of force employed by each participant, and whether deadly force constituted a proportionate response to the threat presented.
Texas courts consistently distinguish between ordinary physical altercations and situations involving an imminent threat of death or serious bodily injury. Prior Texas decisions emphasize that deadly force cannot be justified merely because an individual is losing a fight or feels threatened during a confrontation.
The jury concluded that Anthony’s use of a knife was disproportionate to the threat he faced, and on that basis rejected the defense’s argument that the statutory requirements for deadly force had been satisfied. That outcome underscores the judiciary’s continued emphasis on proportionality, even within a jurisdiction possessing an expansive self-defense statute.
III. Objective Reasonableness, Proportionality, and the Limits of Lawful Self-Defense
The Karmelo Anthony prosecution demonstrates that claims of self-defense are governed by established legal principles rather than public opinion or a defendant’s personal perception of events. Although much of the public discussion centered on whether Anthony believed he was acting to protect himself, Texas criminal law requires courts and juries to evaluate self-defense through objective legal standards. Specifically, courts examine whether the defendant’s actions satisfied the doctrines of objective reasonableness, proportionality, and necessity before concluding that deadly force was legally justified. These principles ensure that self-defense remains a narrow legal justification designed to protect individuals from imminent harm while preventing the unjustified use of lethal violence.
A. Objective Reasonableness
One of the most important principles governing self-defense claims is the doctrine of objective reasonableness—a legal standard requiring courts to evaluate a defendant’s conduct from the perspective of an ordinary and prudent person facing the same circumstances, rather than relying solely on the defendant’s personal beliefs or emotions. This doctrine prevents defendants from escaping criminal liability based merely on a subjective fear that may not have been reasonable under the circumstances.
Texas courts employ the objective reasonableness standard to promote consistency and fairness in the application of self-defense law. Without this requirement, the legality of deadly force would depend almost entirely on each defendant’s individual perception of danger, making the law unpredictable and potentially permitting excessive violence whenever a defendant claimed to feel threatened. Instead, juries must consider all surrounding circumstances, including the conduct of both parties, the immediacy of the threat, and whether an ordinary person would have believed that deadly force was necessary.
In the Anthony prosecution, the jury was required to determine not simply whether Anthony believed he faced harm, but whether an objectively reasonable person would have concluded that deadly force was immediately necessary to prevent death or serious bodily injury. The prosecution argued that the evidence showed an escalating physical confrontation rather than an imminent deadly attack. By returning a guilty verdict, the jury evidently concluded that Anthony’s subjective fear did not meet the objective standard required under Sections 9.31 and 9.32. The verdict reinforces the principle that self-defense turns on what a reasonable person would have believed, not solely on what the defendant personally believed.
B. Proportionality
Closely related to objective reasonableness is the doctrine of proportionality, which requires that the level of force used in self-defense correspond to the seriousness of the threat confronted. Proportionality is a fundamental limitation on the lawful use of force, preventing individuals from responding to relatively minor threats with excessive or deadly violence. Although Texas law recognizes an individual’s right to defend against unlawful force, that right does not extend to employing deadly force whenever any physical confrontation occurs.
Proportionality became particularly significant in the Anthony prosecution because the evidence indicated that Anthony introduced a knife into what prosecutors characterized as an otherwise unarmed altercation. A knife constitutes a deadly weapon because its intended or ordinary use is capable of causing death or serious bodily injury. The introduction of a deadly weapon therefore substantially altered the legal analysis, requiring the jury to determine whether the circumstances justified lethal force rather than ordinary defensive force.
Prosecutors emphasized the disparity in force throughout the trial, arguing that the level of force Anthony employed exceeded the threat presented during the confrontation—reflecting the long-established principle that deadly force must remain proportionate to the danger faced. Although the defense maintained that Anthony reasonably feared serious bodily injury, the jury evidently found that the prosecution had disproved the proportionality requirement beyond a reasonable doubt. The verdict illustrates that even jurisdictions with expansive self-defense protections continue to impose meaningful limits on deadly force through proportionality.
C. Necessity
Another essential component of a lawful self-defense claim is the doctrine of necessity, which requires that the use of force be immediately required to prevent unlawful harm and that no lesser degree of force would adequately protect the defendant under the circumstances. In the context of deadly force, this doctrine ensures that lethal violence remains a measure of last resort rather than an initial response to every physical confrontation.
The necessity requirement reflects criminal law’s underlying purpose of preserving human life whenever reasonably possible. For that reason, Texas law authorizes deadly force only when the actor reasonably believes it is immediately necessary to prevent another person’s use or attempted use of unlawful deadly force, or to stop the imminent commission of certain violent felonies. Courts therefore examine not only whether the defendant feared harm, but whether the circumstances genuinely required deadly force at that precise moment.
During Anthony’s trial, the jury had to determine whether deadly force represented the only reasonable means of preventing imminent harm. The prosecution argued that the confrontation had not escalated to a level requiring lethal force and that Anthony had alternatives that did not involve a knife. By rejecting the self-defense claim, the jury indicated that the statutory necessity requirement had not been met—confirming that courts continue to treat deadly force as an extraordinary remedy reserved for immediate, unavoidable threats of death or serious bodily injury.
D. Public Perception and Legal Standards
The Anthony case also illustrates the gap between public perception and judicial decision-making. High-profile prosecutions generate intense media coverage and social media debate that often reduce complex legal issues to a single question: did the defendant “feel threatened” or “act in self-defense”? Courts, however, do not decide criminal cases according to public sentiment or popular narratives.
Judges instruct juries to apply specific statutory requirements and established legal doctrines when evaluating self-defense claims. Jurors must weigh admissible evidence, assess witness credibility, and determine whether the prosecution has disproved self-defense beyond a reasonable doubt. Personal sympathies, media attention, and public controversy cannot substitute for the legal standards set by the Texas Legislature and interpreted by Texas courts.
The Anthony prosecution illustrates why this distinction matters. While public opinion on the case varied considerably, the jury’s task was limited to determining whether Anthony’s conduct satisfied the statutory requirements of objective reasonableness, proportionality, necessity, and imminence. The verdict reflects the jury’s application of those legal principles, not the broader social or political debate surrounding the case—a reminder that self-defense claims ultimately rise or fall on legal doctrine and evidentiary standards, not public perception.
IV. Reaffirming the Legal Limits of Self-Defense
The Karmelo Anthony prosecution underscores the demanding legal standards governing self-defense claims under Texas criminal law. Although the doctrine recognizes an individual’s right to protect against unlawful violence, it simultaneously restricts the use of deadly force through the principles of necessity, objective reasonableness, proportionality, and imminence. The jury’s verdict shows that these statutory safeguards continue to define the limits of lawful defensive force, even in emotionally charged cases that attract widespread public attention.
This article has demonstrated that Texas law offers strong protections for people acting in legitimate self-defense while simultaneously imposing meaningful statutory limitations on the use of deadly force. The jury’s rejection of Anthony’s defense indicates that subjective fear alone cannot justify homicide absent objectively reasonable evidence of an imminent deadly threat.
Texas further incorporates the Stand Your Ground doctrine, which eliminates the common-law duty to retreat before using otherwise lawful force when an individual is lawfully present, has not provoked the encounter, and is not engaged in criminal activity. Public discussion frequently mischaracterizes Stand Your Ground as blanket immunity for anyone who uses deadly force. In reality, the doctrine only removes the obligation to retreat; it does not eliminate the statutory requirements of necessity, proportionality, and objective reasonableness. Accordingly, a defendant who remains lawfully in place must still establish that the decision to employ deadly force satisfied every element of Sections 9.31 and 9.32.
The case is an important reminder that Stand Your Ground laws do not confer unrestricted authority to use deadly force in interpersonal conflicts. Rather, they preserve the traditional requirement that deadly force be both immediately necessary and proportionate to the danger posed. Future litigation involving self-defense claims will likely continue to focus on these principles, reinforcing that proportionality, objective reasonableness, and concrete context remain the foundation of lawful defensive force.
Ultimately, a successful self-defense claim requires far more than a defendant’s assertion that he feared for his safety. Texas law requires the trier of fact to determine whether the defendant possessed both a genuine subjective belief that force was necessary and an objectively reasonable basis for that belief, viewed from the perspective of an ordinary person confronted with the same circumstances. These statutory principles formed the legal foundation on which the prosecution and defense presented their respective arguments in the Karmelo Anthony case.
Reference(S):
Cases
Braughton v. State, 569 S.W.3d 592 (Tex. Crim. App. 2018) (objective reasonableness and jury evaluation of self-defense).
Gamino v. State, 537 S.W.3d 507 (Tex. Crim. App. 2017) (jury’s role in evaluating self-defense evidence).
Werner v. State, 711 S.W.2d 639 (Tex. Crim. App. 1986) (proportionality and justification principles).
Juarez v. State, 308 S.W.3d 398 (Tex. Crim. App. 2010).
Saxton v. State, 804 S.W.2d 910 (Tex. Crim. App. 1991) (burden of proof after self-defense is raised).
Smith v. State, 355 S.W.3d 138 (Tex. App.—Houston [1st Dist.] 2011, pet. ref’d).
Statutes
Tex. Penal Code Ann. § 1.07 (West 2025) (“deadly force”).
Tex. Penal Code Ann. § 9.02 (West 2025).
Tex. Penal Code Ann. § 9.04 (West 2025).
Tex. Penal Code Ann. § 9.31 (West 2025) (general self-defense).
Tex. Penal Code Ann. § 9.32 (West 2025).
Tex. Penal Code Ann. § 19.02 (West 2025) (Murder).
Tex. Code Crim. Proc. Ann. art. 38.36 (West 2025).
Secondary Sources
Dressler, Joshua. “Rethinking Criminal Homicide Statutes: Giving Juries More Discretion.” SSRN Electronic Journal, 2014, https://doi.org/10.2139/ssrn.2433653.
LaFave, Wayne R. Substantive Criminal Law. 2017.
Robinson, Paul H. Criminal Law Defenses. West Publishing.
Gunter, Bennett & Anthes. Karmelo Anthony Found Guilty: What the Collin County Verdict Teaches Texans About Self-Defense and Murder Law (June 19, 2026).
Texas District & County Attorneys Association. Texas Criminal Laws and Rules.
News Articles
DeMotte, Emily, Dylan Duke & Associated Press. “Karmelo Anthony Sentenced to 35 Years in Fatal Stabbing of Austin Metcalf at Frisco Track Meet.” KERA/Texas Public Radio, June 9, 2026.
Landers, Jamie. “What We’ve Learned About Karmelo Anthony in the Weeks Since the Fatal Frisco Stabbing.” The Dallas Morning News, Apr. 18, 2025.
“Karmelo Anthony Found Guilty of Murder and Sentenced to 35 Years.” The Guardian, June 9, 2026.
Cairns, Kelsie. “Austin Metcalf’s Father Haunted by Karmelo Anthony Trial Visuals Released.” Fox News, June 23, 2026.
Molestina, Ken. “Karmelo Anthony’s Family Claims Injustice, Says They Were ‘Delusional’ Expecting Fair Trial.” CBS Texas, June 10, 2026.
D’Abrosca, Peter. “Self-defense Claim in Austin Metcalf Slaying Is ‘Uphill Battle’: Expert.” Fox News, Apr. 21, 2025.
“Prosecutor Tells Jury That Teen’s Killing at a Texas Track Meet Was Murder, Not Self-Defense.” Associated Press, June 2026.
Piccotti, Tyler. “Who Is Karmelo Anthony? All About the Trial and Conviction of Austin Metcalf’s Murder.” Biography, updated June 10, 2026.
Silver, Lauren. “‘We’re in a Nightmare’: Karmelo Anthony’s Parents Speak as Son Files Appeal.” Court TV, June 11, 2026.
