Why would you protest? You wanted this system. Now it’s coming back to bite you in the ass.
What "system" do you speak of, laws and justice, civilized protocol?
Many components of our current society serve to reinforce systemic prejudice against minorities.
You do know more whites get shot by cops than black, don't you?
We have a system of justice in this country. When an officer is involved in a shooting or death, it's investigated throughly. The evidence is presented to a grand jury or prosecutor, and if found something was amiss, charges get filed.
That doesn't take place in uncivilized communities. You don't wait for anybody to look into anything. You simply put to death a person who's actions you don't like.
The bottom line is we have uncivilized people living in a civilized country. That's why it's a problem.