MEMPHIS, Tenn. (AP) — Police video of the deadly beating of Tyre Nichols by officers in Memphis, Tennessee, is hard to watch. The images are a glaring reminder of repeated failures of efforts to prevent police brutality. Nearly 32 years ago, the savage beating of Rodney King by police in Los Angeles sparked calls for reform. Such brutal scenes have repeated themselves, with police killing roughly three people per day since 2020. The Memphis officers were fired and face murder charges, and their so-called Scorpion unit has been disbanded by the police chief. But advocates say nothing less than a cultural change in law enforcement will provide the safety and liberty Black people demand.