Steve Kerr went all Bruce Lee on this poor whiteboard

Kerr smash!

Steve Kerr is usually a pretty calm guy on the sidelines, but when it comes to bad missed calls or his team playing very poorly, he does not mess around. He was so upset with the officiating and his team that he went Bruce Lee on this poor whiteboard and destroyed it in one fell swoop!

https://vine.co/v/iYbx6ULrdD2

Kerr has no regard for whiteboard life! I hope one of his assistants had an extra or it might prove pretty hard to draw up plays later in the game.