i'm alison stewart. tonight as we absorb the horror of the attack in france, here in the united states we are still suffering after a period of incredible violence-- the killing of two african american men by police officers in minnesota and louisiana, and the shooting of police officers in dallas. americans are pained, frightened, and dismayed over the long-standing racial issues that threaten all our safety. we are here tonight to dig deeper. we're going to hear from african american parents about the talk they have with their children about law enforcement, from police recruits who fear they might make a deadly mistake, from protesters and those who think protestors have gone too far. we know you are having this conversation in your living rooms, your churches, on the street and in schools. join our conversation by using the hashtag #americablackandbluepbs. despite real pain and anger, it is not all about the shouting. we are here tonight to report and to explore how people across the country can find