Amid nationwide protests over police abuse, we speak with Cariol Horne, the Buffalo police officer whom a New York court has just vindicated for stopping a fellow cop from choking a handcuffed Black man during an arrest. In 2006, Horne, who is Black, saw a white officer repeatedly punching the man in the face before putting him in a chokehold. After Horne heard the man say “I can’t breathe,” she intervened by grabbing the officer’s arm. Horne was sanctioned by the Buffalo Police Department, reassigned, then fired in 2008, just months before she was eligible to receive her full pension. A new ruling makes her eligible for back pay and pension benefits. Horne says she is now calling on state governments and Congress to follow the lead of Buffalo, which passed Cariol’s Law, legislation that makes it the duty of officers to intervene in cases of brutality. “I knew that I did the right thing,” Horne says. We also speak with Intisar Rabb, a Harvard Law professor who is one of three attorneys representing Horne. Cariol’s Law “should spread far and wide” to other cities and states, Rabb says.