From NYTimes:
In a blow to Illinois' sweeping eavesdropping law, a federal appeals court on Tuesday blocked its enforcement in cases where someone is recording a police officer at work.
It was a victory for activists who had feared that using smartphones or video cameras to record police responding to demonstrations during this month's NATO summit in Chicago could land protesters and bloggers behind bars for years. It's also the most serious legal challenge to the measure — one of the strictest in the nation — and adds momentum to efforts by some state lawmakers to overhaul the legislation, whose constitutionality has been questioned..