The problem isn't racism. It's that we've created an environment where this is ok. If you're a cop why take any risks when as a country we've decided that murdering an unarmed man is ok? You've seen George Zimmerman, a citizen not a cop, get away with it. Why wouldn't you? Until we deman more of police, hold them to the highest standard, this will keep happening. Start locking these guys up and magically you'll see it stop.
As opposed to the standard where you can sucker punch an old lady down the street and be out of jail before midnight. I'd say that standard has led to this type of thing happening more and more.
Due to an overcrowded penal system, Criminals know that if they can get away from the police, their time in jail won't be much longer than the original charge especially if they're on parole already. If not, Assault on a police officer may get you a couple year sentence, but you'll be out in a few months in the most populous areas of this country, anyway.
Here's an idea, Don't fuck with the police when they happen to come callin and you won't get your ass shot .
It's not that hard.