Six police officers were shot on Sunday in Baton Rouge in yet another targeted attack on law enforcement officers. Three of the officers died and the gunman later was killed in a shootout. Early reports suggest that the shooter, like the perpetrator of the attack in Dallas earlier this month, may have been motivated by recent officer-involved shootings of black men. President Obama wrote an open letter to law enforcement expressing his support, thanking officers for their service, and urging the nation to come together in a trying time. Keep reading for more news.