Police officials in McKinney, Texas, announce the resignation of a white policeman who threw a black girl to the ground and waved a gun at other teenagers during a pool party. McKinney police chief Greg Conley says the actions of Corporal Eric Casebolt were 'indefensible', and in no way supported by police protocol. Casebolt had been a 10-year veteran of the McKinney police force
Source: Reuters Wednesday 10 June 2015 09.16 BST
http://www.theguardian.com/us-news/video/2015/jun/10/texas-mckinney-police-officer-pool-party-video