Egypt is witnessing some of the biggest riots in many years as thousands of people took to the streets chanting slogans as "Mubarak Mubarak, Saudi Arabia is waiting for you." Below is a chilling video of what's happening in Cairo today. A young protester stood in front of a water-hosing truck in a moment reminiscent of the Chinese man who defiantly stood in front of a tank during the Tiananmen Square uprising. Twitter was blocked in Egypt and cell phone communication was interrupted.  Le Monde has just reported many casualties among the protesters. You can follow some of the latest on the page of the Facebook group " We Are All Khaled Said" which called for the protests today. Khaled Said is the young Egyptian businessman who was allegedly killed by the police after he was found filming police officers dividing what they apprehended during a drug bust.