Every few months/years, cops beat or kill unarmed Americans, at far higher rates than our partners and allies in developed countries. While this is cause by itself for question and reform, the data also says that black men are at a particularly high risk. Are American cops using unnecessary violence and brutality or are there just a few bad apples making shaky calls in extreme situations? Are our police forces beholden to systemic racism or worse? If so, what do you do about it? Who watches the watchmen?