Violent criminals should be imprisoned regardless of their race. If blacks don't want to see violent criminals imprisoned just because they share skin color, then perhaps they deserve what they are getting.
Blacks have lost trust in the system.
Blacks have been listening to scumbags that tell them the problem is the system rather than the criminal lifestyle.
They want justice more than anybody.
I disagree--we see black criminals get off because of black juries, we don't see white criminals get off because of white juries these days. (Long ago is another matter.)
But the US system is not about justice and never has been.
It is a system of one set of rules for the poor and another for the rich.
One door for the poor and another for the rich.
Massive government bailouts to rich bankers.
Prison for the poor.
So long as you accept money as a proxy for power every society is that way.