Occupy movement: police reaction in pictures

A University of California at Davis (UC Davis) policeman pepper sprays peaceful protesters at the northern California university campus Photograph: Jasna Hodzic / The California Aggie/EPA

Police manhandle a protester to the ground as people look on in downtown Los Angeles, California where over 20 protesters were arrested as west coast demonstrators marked the movement's two-month anniversary Photograph: Frederic J. Brown/AFP/Getty Images

Seattle activist Dorli Rainey, 84, reacts after being hit with pepper spray during an Occupy Seattle protest at Westlake Park in the city Photograph: Joshua Trujillo/AP

A man who identified himself as Brendan Watts with blood on his face while surrounded by three police officers in Zuccotti Park in New York city. A fight broke out between protesters affiliated with Occupy Wall Street and police, in which Watts was injured Photograph: Andrew Burton/Getty Images

Police push demonstrators back during the Occupy Denver Protest at Civic Center park in Colorado's capital Photograph: Craig F. Walker/AP

A police officer uses pepper spray on an Occupy Portland protester, 20-year-old Elizabeth Nichols, at Pioneer Courthouse Square in Oregon Photograph: Randy L. Rasmussen/AP

A man is arrested for throwing something at police at Occupy Portland in Oregon Photograph: Natalie Behring/Getty Images

A protester is arrested by Los Angeles Police Department officers after he attempted to join a group of Occupy LA demonstrators who were occupying a park in front of the Bank of America building in downtown Los Angeles, California Photograph: Kevork Djansezian/Getty Images

A protester battles with three Los Angeles Police Department officers as they attempt to arrest him during an Occupy LA protest in front of the Bank of America building in downtown Los Angeles Photograph: Kevork Djansezian/Getty Images