BATON ROUGE, LA - JULY 18: A Law Enforcement Officer places flowers on a memorial outside Our Lady of the Lake Regional Hospital after three police officers who were shot and killed in an ambush on July 18, 2016 in Baton Rouge, Louisiana. According to officials the gunman, Gavin Long, who fatally shot three law enforcement officers and wounded three others before being killed by the police was targeting officers. (Photo by Sean Gardner/Getty Images)
