So we know that the cop who investigated the Trayvon Martin murder has a history of racial problems. We know that one of the cops changed a witness’s testimony. We know that Zimmerman fired a warning shot and Martin begged for his life. We know that the police lied about Zimmerman’s criminal record. We know that Zimmerman has a history of being a self-appointed vigilante. And most importantly, we know that Martin was unarmed and could never pose a credible threat to a man who had 100 pounds and a gun on him.

And yet, the police think it was self-defense.

This is not an isolated case; this is what institutionalized racism looks like.