SYDNEY, AUSTRALIA - MARCH 08:  Protesters gather in Taylor Square during a rally against alleged police brutality at the annual Sydney Gay and Lesbian Mardi Gras parade on March 8, 2013 in Sydney, Australia. Thousands of demonstrators gathered today to demand an external investigation after a video was released showing a handcuffed parade goer get thrown to the ground by a police officer.  (Photo by Don Arnold/Getty Images)