It is not just the fed. It IS also the main big banks and some in government.
It is not like OWS is protesting at a kindergarten. They ARE protesting at the main offices of the ones who committed the mortgage backed securities fraud.
They just are not convinced, like conservatives are, that spoiling corporations by destroying union power, criminalizing society by ending welfare or getting extraordinary inequality by lowering wages on the rich are things in the best interest of the people.