Tim Wise — American Activist born on October 04, 1968,

Timothy Jacob "Tim" Wise is an American anti-racism activist and writer. Since 1995, he has given speeches at over 600 college campuses across the U.S. He has trained teachers, corporate employees, non-profit organizations and law enforcement officers in methods for addressing and dismantling White racism in their institutions... (wikipedia)

For people of color - especially African Americans - the idea that racist cops might frame members of their community is no abstract notion, let alone an exercise in irrational conspiracy theorizing. Rather, it speaks to a social reality about which blacks are acutely aware.
To believe that the United States is post-racial requires an almost incomprehensible inability or unwillingness to stare truth in the face.
Here's the reality. The image of a white Jesus has been used to justify enslavement, conquest, colonialism, the genocide of indigenous peoples. There are literally millions of human beings whose lives have been snuffed out by people who conquered under the banner of a white god.
Our failure as a society to properly acknowledge and confront the psychological, social, and political effects of white privilege has perpetuated racial inequality and race-based political resentments.
Being asked to describe what 'post-racial' means is a bit like being asked to describe a leprechaun, cold fusion or unicorns: we know what is meant, but, if we are willing to be honest, we also know that none of the four describe something real, something tangible, something true.