People in that situation will rebel with any reason. The baseline is still poverty that creates a hate for society. Then one spark in the powder keg is enough, it is police bias now, but a high profile hate crime against a black person could have done the same.
For the record, protesting should never be seen as negative provided it happens peaceful. It is just voicing your opinion en masse. Rioting, that's a different matter. Often times I see the debate focussing way too much on the rioting, while the vast majority were just protesting.
If you fix that disproportionate poverty and put the welfare of an average black person the same as a white person, you'll see those differences in crimes melt away. I don't personally believe the violence against black people will dissapear in the same way, but should diminish as well, and maybe in time (again couple of generations give or take) they do dissapear.
I hope this doesn't turn into a "black people just don't want to get better lifes and do more effort to move up in life", because poverty is a very devilish grip. No money for a decent education means no decent job. If your parents grew up in the same fashion, you are more likely to grow up in a problematic family. If your social network only consists of other poor people, there's little to get a golden break.
In order to fix this problem you'll need radical things. Forced mixing of races in neighbourhoods, proper and longterm investment in poor areas with the intent of creating well paying jobs, free qualitative education for everybody up to university, removal of children out of abusive families,... .