If you want to dig past the abstract, crime is far more predictable by poverty rate than it is, or ever has been, by race. In fact, crime rates among poor whites are virtually indistinguishable from those among poor blacks. But the racially segmented crime rates are higher because black poverty rates are higher.
And why is that? Ask any sociologist and they'll have the same answer: systemic racism. This shows up in hundreds of different ways: redlining, wage gaps, resource availability, etc.. The criminal justice system as a whole, and cops in particular, are a huge part of this. Cops Terry Stop black people at higher rates than white people. Cops detain black motorists at higher rates than white people. Cops arrest black people at higher rates than white people for the same crimes. They are prosecuted at higher rates than white people for the same crimes. They receive longer sentences than white people for the same crimes. And they get wrongfully convicted (as evidenced by exonerations) at higher rates than white people. And we have an extremely ugly history of making laws that are intentionally targeted at criminalizing black people...giving cops more ammunition to continue this oppression.
Black people being murdered in cold blood by police officers is merely the tip of the iceberg when it comes to black oppression by the police. World War I wasn't started because people really cared about Austrian Archdukes...the explosion into full on war was a long time coming, and Franz Ferdinand was just the trigger. Just as well, BLM activists absolutely care about black people being killed by black people. But when a cop, who represents a daily oppressive force against black people trying to make their way out of poverty, brutally murders someone in cold blood, in broad daylight, and with dozens of witnesses begging him to relent, and then continues to choke a dead body for several minutes after he gave up the ghost....yeah, protesters have every right to make a big fucking deal about it.
BLM absolutely cares about black violence and crime. They know what the solution is: black economic mobility. And contrary to the experience of poor white people that also experience violence and crime problems, cops are a part of the problem, not the solution.
Just to be clear, to all the downvoters, this is an actual earnest conversation. I don't think any participant of this thread deserves the downvotes that it is getting. I do believe there is subtle racism here, but it isn't malicious racism, just the typical sort of everyday biases that present themselves in all people from time to time. We don't solve systemic racism by taking sides and lobbing pot shot insults. That does more damage than good.