"some mis-perceived notion of institutionalized racism among police departments."

Are you seriously denying the violence from institutional structure that has racism hidden inside of our police departments? 

Rodney King was the first visible instance, phones with cameras make it almost impossible for cops to do what was routine in getting away with violence and murder.

Did cops begin this trend AFTER it became too easy to capture video of their crimes?

Denial isn't a river in Africa.