Today at the "What to Do When the President is Just Not that Into You" panel, an obviously dedicated volunteer for Organizing for America spoke up on behalf of Obama's policies. Perhaps unwisely, in the question and answer part of the session, he trotted to the front and offered an OFA broadsheet. When he said something, Dan Choi tore the sheet in half and threw it back in his face. When Mr. Tschida replied, Lt. Choi tore one of the halves into smaller pieces, and threw the pieces in his face again -- to the applause of the audicence.
You can read the details here:
http://www.dailykos.com/....
One thing I can add is the name of the fellow who ran up to the front. As it happened, I was sitting just two seats away from him.