Police in the US are investigating a detective who appears to draw his gun during a mass snowball fight on the streets of Washington DC. The man - not in uniform at the time - then appears to pull out a gun while an angry crowd gathers and chants: "Don't bring a gun to a snowball fight." DC police refused to comment, telling the BBC an investigation was under way. 'Don't shoot' At one point on the video - shown on YouTube - the man identifies himself as a... (GunPolicy.org)