crime in black communities

White americans were correct to understand the high level of crime in black communities but their response to it was cowardly and immoral. 

Because even in black communities, there are many good people who don't have the option of running away from crime. White americans should have stepped up policing and arrested the criminals. By running away from the problem, they failed to protect the good blacks from crime, people who were mostly unable to protect themselves.

The result has been bad for both white americans and black americans.
How do you expect black americans to behave when every day of their lives, they witness that there is no justice for them? Other blacks rob and assault them and the police won't lift a finger. This is the "no justice" that America truly should be ashamed of.