A Syrian rebel group once deemed "moderate" by the U.S. was captured on film beheading a child in Handarat, near Aleppo, in a gruesome video that circulated on social media on Tuesday. The Daily Beast reports: "There are two clips from the unsavory events. One shows five militants surrounding the boy. In the second, one of them stands over him on the truck and cuts the boy's head off with a dull knife, raising it over his head."