Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

A costumed for Halloween Occupy Wall Street supporter walks past the "Slot Exchange" float before New York's Halloween parade at Zuccotti Park, Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

A costumed for Halloween Occupy Wall Street supporter walks past the "Slot Exchange" float before New York's Halloween parade at Zuccotti Park, Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

A costumed for Halloween Occupy Wall Street supporter walks past the "Slot Exchange" float before New York's Halloween parade at Zuccotti Park, Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

Occupy Wall Street members take part in New York's annual Halloween parade on Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

Occupy Wall Street members take part in New York's annual Halloween parade on Oct. 31, 2011.

Thousands of New Yorkers descend onto th

(credit: Emmanuel Dunand/AFP/Getty Images)

Thousands of New Yorkers descend onto the streets to take part in the annual Halloween parade in Greenwich village, New York on Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

Occupy Wall Street members take part in New York's annual Halloween parade on Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

Occupy Wall Street members take part in New York's annual Halloween parade on Oct. 31, 2011.

Occupy Wall Street at the 2011 Halloween Parade

(credit: Emmanuel Dunand/AFP/Getty Images)

Occupy Wall Street members take part in New York's annual Halloween parade on Oct. 31, 2011.

West Village Halloween Parade

(credit: Sonia Rincon, 1010 WINS)

West Village Halloween Parade

(credit: Sonia Rincon, 1010 WINS)

West Village Halloween Parade

(credit: Sonia Rincon, 1010 WINS)

West Village Halloween Parade

(credit: Sonia Rincon, 1010 WINS)

West Village Halloween Parade

(credit: Sonia Rincon, 1010 WINS)

West Village Halloween Parade

(credit: AP Photo/Tina Fineberg)

West Village Halloween Parade

(credit: AP Photo/Tina Fineberg)