Story highlights Tim Robbins famously supports liberal causes

"It's a bit sloppy ... but full of passion," he said

Penn Badgley was spotted snapping photos of the demonstrators

Tim Robbins is taking action.

The actor , who famously supports liberal causes, joined with protesters Wednesday at the Occupy Wall Street rally in Lower Manhattan.

Robbins, 52 , participated in the demonstration outside the Federal Courthouse in Foley Square.

"This is what an actual grassroots movement looks like," he tells the Financial Times. "It's a bit sloppy and disorganized but full of passion."

Demonstrators, who have been camped out in a park near Wall Street since mid-September, are protesting economic inequalities, corporate greed and the influence of corporate money on politics and government.