"..and what percentage of cops are guilty of this???"

Far too many.  

"Why don't we focus our energies on black on black violence in the inner city."

You mean the cops you just defended aren't focused on that?   Well there's our problem right there.  Instead of beating and sometimes murdering black people maybe cops should focus on enforcing the law.

And personally I'm more worried about the police than I am about black people.

Black people just aren't that scary to me.   Cops who violate civil rights, ignore crime and sometimes even murder people under color of the law are much more dangerous, especially where I live.