I think you're underestimating the problem by limiting it to unarmed black men killed by police. There's a lot that a police force can do besides killing people

I think you're underestimating the problem by limiting it to unarmed black men killed by police. There's a lot that a police force can do besides killing people. There's profiling and unlawful arrests and prosecution, cruel and unusual punishments in prisons and jails, along with general harassment. You should look at the results of DOJ investigations into the Ferguson and Baltimore police departments, they are absolutely scathing. In the Baltimore police department, there were incidents in which they arrested people just hanging out on a street corner for no reason (when they told their lieutenant they didn't have a valid reason to arrest them they were told "just make something up") in front of the DOJ investigators! I'd also recommend the book "Just Mercy" for examples of the horrors of malicious prosecution. Just one egregious example from that book: a mentally disabled woman was sentenced to life in prison for the murder of her child. The problem? The woman never had a child, and was in fact infertile!