Breonna Taylor, a 26-year-old Black medical worker in Louisville, Kentucky, was shot to death by police shortly after midnight on March 13, 2020, in the apartment she shared with her boyfriend, Kenneth Walker. The police had a no-knock warrant and entered with a battering ram to search for evidence of drug dealing; none was found. Last week a Kentucky grand jury indicted a now former detective of the Louisville Police Department, Brett Hankison, on charges of reckless endangerment for his role in the raid. No chargers were filed, though, against Jonathan Mattingly and Myles Cosgrove, the two officers who fired shots inside the apartment, and no one was charged with killing Taylor. Here, Stanford Law Professor David Sklansky discusses the case and the use of no-knock warrants—and reforms that might prevent unnecessary death and injury in the future.