another random user sends this excerpt from a BBC report:
"Legal pressure has forced Twitter to hand over messages sent by an Occupy Wall Street protester. Twitter spent months resisting the call to release the messages, saying to do so would undermine privacy laws. The Manhattan district attorney's office wanted the tweets to help its case against protester Malcolm Harris. It believes the messages undermine Mr. Harris' claim that New York police led protesters on to the Brooklyn Bridge to make it easier to arrest them. It claims the messages will show Mr. Harris was aware of police orders that he then disregarded."