say guy whose legacy war cop division america president barack obama caution americans draw easy conclusions shoot attack kill three law enforcement officials baton rouge wound three others right know motive killer know whether killer set target police officer whether gun respond call president say white house today.he also appear caution republicans use incident political attack hillary clinton signal sympathy anti-police protest group like black live matter need inflammatory rhetoric need careless accusations throw around score political point advance agenda say need temper word open hearts us obama argue attack police officer new part ongoing struggle divisions new say around clock news cycle social media sometimes amplify divisions via breitbart community agitator chief warn republicans need inflammatory rhetoric