The U.S. Justice Department is seeking the death penalty against a white supremacist who killed 10 Black people at a Buffalo supermarket in 2022. It's the first capital case opened by the Biden administration. As detailed in American Gun: The True Story of the AR-15, the shooter planned his attack and described in lengthy writings that he wanted an AR-15 because it would allow him to fire rapidly and kill as many people as possible before the police arrived. “The AR-15 and its variants are very deadly when used properly," he wrote. "Which is the reason why I picked one.”
Once police showed up, he immediately surrendered.