Egyptians riot police look at a supporter of Egypt's former President Hosni Mubarak clashing with an anti-Mubarak protester outside the police academy where his trial will take place, in Cairo August 3, 2011. Mubarak was wheeled into a courtroom cage in a hospital bed on Wednesday to face trial for killing protesters -- an image that thrilled those who overthrew him and must have chilled other Arab autocrats facing popular uprisings. If convicted, Mubarak could face the death penalty. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: CIVIL UNREST POLITICS)