"Barack Obama's speech on the Edmund Pettus Bridge to mark the fiftieth anniversary of the Selma to Montgomery marches should have represented the culmination of Martin Luther King Jr.'s dream of racial unity. Yet, in Fracture, MSNBC national correspondent Joy-Ann Reid shows that, despite the progress we have made, we are still a nation divided--as seen recently in headline-making tragedies such as the killing of Trayvon Martin and the uprisings in...