On July 7, 2016 the FBI issued a "Potential Activity Alert," for "Violence Against Law Enforcement Officers and Riots Planned for 8-10 July, 2016, ("which is a day before 12 officers were ambushed and shot), killing 5 of them in Dallas Texas.The alert stemmed from social media threats, after Alton Sterling was shot during an altercation with a local officer, calling for a planned "purge to kill all cops in Baton Rouge July 9." The alert depicts an image obtained from the social media posting of a masked man, reminiscent of the images of ISIS beheading victims, with a police...