From Firedoglake :
Members of the hacktivist group Anonymous have released sixty hours of footage of the raid by the New York Police Department against Occupy Wall Street on November 15, 2011. The footage posted is from the NYPD’s Technical Assistance Research Unit (TARU), a surveillance unit that is regularly present at political demonstrations to film police actions. It was posted as a torrent for download late in the evening on September 23, 2012. A tiny sample of the footage, including a statement read by a member of Anonymous, was posted on YouTube.
Here is the start of the Anonymous playlist on YouTube :