Demonstrations against the government of Egyptian President Hosni Mubarak gather force as thousands take to the streets and army vehicles move into Cairo to bolster police. A curfew is in force, and Mubarak is to address the nation. Opposition leader Mohamed ElBaradei is doused by a water cannon.Police and protesters clashed across Egypt on Friday, and opposition leader and Nobel Peace laureate Mohamed ElBaradei was doused by a water cannon before escaping the swinging batons of riot police and taking cover in a Cairo mosque.