let's bring in presidential historian, douglas brinkly. michael dyson, the author of the book about president obama. >> what does the country need to hear about press obama? >> he has made dozens of these r rabbi, priest speeches. we have to give him high marks for staying steady through these and when i sang amazing grace through the charleston killings. he needs to try to heal the police and protesters. he has a tricky dance of standing up for law enforcement and also talking about people's right for peaceful protest. >> what do you want to hear him say? >> i would prefer him go to minnesota, louisiana, and then dallas. he could bring healing to the nation. he has to acknowledge the lethal and ferocious assault upon the police department and the lethal and ferocious assault upon black men and women's lives in america. he can do that by visiting all those ter rairains. he has to speak healing not as a renunciation of the past but in grappling of it. we must finally and forever be done with the divisions that royaled the american surface.