I just learned about the case of Oury Jalloh, which is fascinatingly bizarre and horrifying.
On January 7th, 2005, police in Dessau, (East) Germany arrested an African immigrant who was drunk and had allegedly been harassing a group of cleaning ladies. For inexplicable reasons, he was shackled to a mattress in a holding cell and left alone for several hours, during which time a fire broke out in his cell and he burned to death. Police would find a lighter in his cell and assumed he had started the fire to try to get them to unshackle him.
Except that over the years, more and more evidence has come out that he was beaten to death in his cell by the police in a sort of hazing ritual carried out on local drunks that had originated in the Communist era, who then burned his corpse to destroy the evidence, and that almost the entire staff of the precinct were complicit in killing him and then covering it up. Only one of the officers involved has ever been found guilty of a crime (and only involuntary manslaughter at that) because lots of critical evidence went missing or was deliberately destroyed, and it apparently wasn’t the first time someone had been killed under similar circumstances in the exact same cell.
For as much unwarranted violence against blacks takes place among American law enforcement, I can’t even think of anything within my lifetime in this country that even comes close to this level of barbarousness.