There's still a lot of actual racist violence by the police in this country. And there's a situation where municipal governments essentially have no power to actually stop out of control cops.

But there are lots of people who want to do something but aren't going to dive full tilt into actually challenging the serious problematics of a violent police force. So there's a huge market for "do something small" which involves challenging fairly petty expressions of racism.

Basically, on "the left" and "the right" you have experts taking people's real grievances and turning them into "feel good" symbology. The idiocy of the social signaling is annoying but the way the actual grievances go unaddressed is a considerably worse problem.