Fox News reports that McKinney police corporal Eric Casebolt has resigned from the police department. The report also connects this resignation with a YouTube video that shows a white police officer barking orders at black teens, manhandling a 15-year-old girl in a swimsuit, and pointing a gun at two males, one of whom is armed only with a towel. The post also says it obtained information claiming that Casebolt had trained in “several different disciplines of martial arts, but now exclusively trains in Krav Maga combat arts, Arnis, and ground fighting.”