@FBM,
I believe police violence exacerbates the problem more than solving it. In what kind of environment can the police use military equipment against its own people? How does their military tactics reduce crime?
How many communities purchased or received military equipment where the community has been relatively crime free? For what purpose?
Are these police departments preparing for war with its own people?
Another thought; I hope somebody will step in front of those tanks like the Chinese citizen did in Tianenmen Square in Beijing to stop this craziness.