Tweeting is against the law? And owning Curious George toys?

A social worker from New York City was arrested last week while in Pittsburgh to participate in the G-20 protests, then subjected to an FBI raid this week at his home—all for using Twitter. Elliot Madison faces charges of hindering apprehension or prosecution, criminal use of a communication facility and possession of instruments of crime. He was posting to a Twitter feed (or tweeting, as it is called) publicly available information about police activities around the G-20 protests, including information about where police had been ordered to disperse protesters.

[snip]

Madison, his wife and housemates were roused from sleep during the weekend when the Joint Terrorism Task Force swept into their house, keeping them handcuffed for hours, searching the house and removing computers and other property from everyone in the house. Madison said the FBI “for 16 hours, proceeded to take everything, from plush toys to kitchen magnets and lots of books ... they took Curious George stuffed animals.

What the fuck is going on?