harvard sociologist and with us, and emanuel kiever from missouri, and before the broke, you talked about how the mobile left the ghetto. they are not coming back. given the communities that we have now with the people living in them, presidents with he's my brother's keeper, what do you do to call a truce between the police department and the young fellow walking the streets hassled by them. how do you start from where we are now to try to bring peace and progress? >> well, first of all before i get into the direct answer, i can do this quickly. i think it is important to understand that where - where fear exist, positive human relations and trust are essentially, you know, on vacation. so that is what you have in the urban core. people who come in, who are fearful, including police officers, with the proliferation of guns, differences between people and different races. black men come across as being dangerous, even when they are unarmed, if they only have tea and skittles in the pocket. they are ominous looking. that is a problem we can deal with. difficult. what we have to do, it take