Nov. 18, 2011: Occupy protesters get sprayed at University of California Davis. Thomas K. Fowler/AP hide caption

itoggle caption Thomas K. Fowler/AP

Nnaemeka Alozie, campaign manager for California congressional candidate David Steinman, poured milk on his face Tuesday after being pepper sprayed during the incident at Santa Monica College. Courtesy of David Steinman/AP hide caption

itoggle caption Courtesy of David Steinman/AP

In this image made from video, a police officer uses pepper spray as he walks down a line of Occupy demonstrators sitting on the ground at the University of California, Davis on Friday, Nov. 18, 2011. Thomas K. Fowler/AP hide caption

itoggle caption Thomas K. Fowler/AP