Occupy Wall Street protesters in Zuccotti (Liberty) Park.
This is a grassroots, nonviolent movement, made up of multi-generation people of all ages and social-economic backgrounds. They call themselves the "99%" . They are about income equality and social justice issues but remained loosely organized and there were no specific demand.
They come out for their own reasons rather than the reasons that someone else has given to them. Some protesters want the movement to rally around a goal, while others insist that isn't the point.