It is no exaggeration to describe the scene which greeted me as apocalyptic. Police in riot gear lined both sides of Broadway from Fulton Street where I got off the subway to the park several blocks south. Some cooled their heels, fondling their batons, clearly pleased with the work they had accomplished in the preceding, engaging other fellow cops with frat boy banter. Others paced idly displaying the swaggering insolence which most white people, typically the ultimate beneficiaries of it choose to ignore, but which is surely familiar and plenty menacing to those who are its usual victims,
http://www.counterpunch.org/2011/12/09/standing-with-occupy-wall-street-nov-15-17/
It's a good narrative of wondering around to various scenes.