CAIRO: A security source told Youm7 that security forces showed restraint while dispersing protesters in Tahrir Square this morning, despite the protesters' attempts to provoking them. The sources said four protesters were arrested after assaulting members of the military police forces. After evacuating the protesters spread throughout Tahrir Square, four armored vehicles were sent downtown to secure all the square's entrances. Security forces are evacuating Tahrir Square after the protesters decided to organize an indefinite sit-in until all their demands are met. There were protests in Tahrir Square yesterday November 18, dubbed the Friday of the Only Demand.