The law of self-defense permits the use of deadly force under a strict set of conditions: the threat must be both imminent and unlawful, and the response, both necessary and proportionate. But what of the murkier scenarios where multiple parties, ensnared in the throes of perceived danger, believe themselves justified in their fears? Consider the tragic case of George Zimmerman and Trayvon Martin—where does the law stand when fear is misplaced, and how swiftly can one lawfully escalate to lethal force? In this conversation, recorded in early 2022, Professor Kimberly Ferzan of the University of Pennsylvania Carey Law School navigates these shadowy waters and others, offering her insights into the delicate balance between legal theory and the stark realities of personal safety.
Professor Ferzan uses the high-profile case of Ahmaud Arbery to shed light on how citizen's arrest laws interact with self-defense, and she explains the contrasts between "duty to retreat" and "stand your ground" rules. These distinctions highlight how one's legal obligations during a confrontation can vary significantly from state to state. She clarifies the roles of aggressors and provocateurs in these scenarios—those who initiate violence yet claim self-defense when faced with retaliation, revealing the layered complexities and rapid judgments required by law.
Professor Ferzan explores Kyle Rittenhouse's case to discuss how guns can further complicate self-defense claims. The presence of a firearm can, on the one hand, necessitate a quicker escalation to lethal force, legally justified by the potential threat of the weapon being used against its owner. On the other hand, bringing a weapon into an already tense situation can potentially be seen as a provocative act, influencing the legal framework (and public opinion) on what constitutes legitimate self-defense. Through notorious examples and hypotheticals, Ferzan sheds light on the interplay between legal principles, ethical considerations, and the real-world implications of defensive actions.
What to Know Now
The three men convicted of murdering Ahmaud Arbery in Georgia state court in November 2021 are serving life sentences, and their state convictions stand; motions for a new trial were argued in October 2024. A federal jury convicted all three of hate crimes in February 2022, and on November 14, 2025, the Eleventh Circuit upheld those convictions. Georgia's 2021 overhaul of its citizen's arrest law (HB 479) repealed the statute at issue in the case and sharply narrowed private detention authority.
In the Zimmerman case, when George Zimmerman told a police non-emergency dispatcher that he was following Trayvon Martin, the dispatcher replied, "we don't need you to do that." Zimmerman was acquitted in 2013.
On the burden of proof, every state now requires the prosecution to disprove self-defense beyond a reasonable doubt once the defense is properly raised. Ohio was the last state to place that burden on the defendant and shifted it to the prosecution in March 2019, although Martin v. Ohio (1987) holds that the Constitution permits either allocation.
Firearms questions have grown more pressing. In New York State Rifle & Pistol Association v. Bruen (June 2022), the Supreme Court struck down discretionary "may issue" licensing for carrying handguns in public, and 29 states now allow permitless carry. At least 31 states recognize no duty to retreat anywhere a person is lawfully present. With more people lawfully armed in public, the questions of when carrying or displaying a gun counts as provocation, and how citizen's arrest powers interact with self-defense, arise more often.
