The NYPD began cracking down on peaceful Occupy Wall Street demonstrators this morning. Seven protesters were arrested. Police claim (see video who's resisting) one protester was injured when he resisted arrest. Approximately 350 protesters have been occupying a park near Wall Street and demonstrating since Saturday. The campers issued a public call for reinforcements on the adbusters website and on twitter. It appears the arrests were targeted at leaders of the occupation. Police also dismantled a makeshift communications center the protesters had set up in the park and confiscated camera and computer equipment.