A protester takes away a tear gas canister during clashes with security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
A view of Tahrir Square shows makeshift tents burning after the Egyptian security forces came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/KHALED ELFIQI
A protester stands amid tear gas smoke, during clashes with security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
Egyptian Protesters run away as other stand behind a barricade facing Egyptian security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
Egyptian security forces are seen amid tear gas smoke during clashes with protesters in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
A view of Tahrir Square shows Egyptian security forces into the square during clashes with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/KHALED ELFIQI
Egyptian security forces seen during clashes with protesters (not pictured) in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
A general view of Tahrir Square shows makeshift tents burning after after the Egyptian army came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas EPA/KHALED ELFIQI
A wounded Egyptian protester is brought to the makeshift hospital during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
Protester extinguishes a tent in fire after the Egyptian army came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/KHALED ELFIQI
A view of Tahrir Square shows the Egyptian security forces into the square following clashes with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas EPA/KHALED ELFIQI
Egyptian medics and other volounteers receive medication and first aid material at the makeshift hospital during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
Protester extinguishes a tent in fire after the Egyptian army came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas EPA/KHALED ELFIQI
A protester stands amid tear gas smoke, during clashes with security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
A view of Tahrir Square shows makeshift tents burning after after the Egyptian security forces came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/KHALED ELFIQI
A protester takes away a tear gas canister during clashes with Egyptian security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/MOHAMED OMAR
An Egyptian medic applies a piece of cotton with vinegar to a protester's nose to ease tear gas effect during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media sources, hundreds of protesters took control of Tahrir Square in the Egyptian capital on 20 November, following violent overnight clashes with security forces in which two people were killed and hundreds injured. The protesters were guarding the entrances to the iconic square in central Cairo, from which security forces were forced to withdraw after clashes in which teargas, rubber bullets and shotguns were reportedly used against the demonstrators. Security forces were deployed to protect the nearby headquarters of the Interior Ministry, while traffic was being redirected from the square. EPA/AMEL PAIN
Egyptian protesters take a break on the street side during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
Egyptian protesters shout slogans against the ruling military council during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
Egyptian protesters shout slogans against the ruling military council during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media sources, hundreds of protesters took control of Tahrir Square in the Egyptian capital on 20 November, following violent overnight clashes with security forces in which two people were killed and hundreds injured. The protesters were guarding the entrances to the iconic square in central Cairo, from which security forces were forced to withdraw after clashes in which teargas, rubber bullets and shotguns were reportedly used against the demonstrators. Security forces were deployed to protect the nearby headquarters of the Interior Ministry, while traffic was being redirected from the square. EPA/AMEL PAIN
An Egyptian protester protects himself from tear gas as he stands in a street leading to Tahrir square during clashes with security forces in Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
An Egyptian protester with a sticker on his forehead reading in Arabic 'revolutionaries are not thugs why are we tried by the military?' during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media reports, Egyptian troops and security forces attacked thousands of people to force them out of central Cairo's Tahrir Square on 20 November. Tear gas was used and gunshots were heard, activists said, adding that security forces attacked a field hospital that was set up near Tahrir to help those injured in clashes or choked by tear gas. EPA/AMEL PAIN
A wounded Egyptian protester is examined by a doctor at the makeshift hospital during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media sources, hundreds of protesters took control of Tahrir Square in the Egyptian capital on 20 November, following violent overnight clashes with security forces in which two people were killed and hundreds injured. The protesters were guarding the entrances to the iconic square in central Cairo, from which security forces were forced to withdraw after clashes in which teargas, rubber bullets and shotguns were reportedly used against the demonstrators. Security forces were deployed to protect the nearby headquarters of the Interior Ministry, while traffic was being redirected from the square. EPA/AMEL PAIN
Egyptian protesters shout slogans against the ruling military council during clashes with security forces in Tahrir square Cairo, Egypt, 20 November 2011. According to media sources, hundreds of protesters took control of Tahrir Square in the Egyptian capital on 20 November, following violent overnight clashes with security forces in which two people were killed and hundreds injured. The protesters were guarding the entrances to the iconic square in central Cairo, from which security forces were forced to withdraw after clashes in which teargas, rubber bullets and shotguns were reportedly used against the demonstrators. Security forces were deployed to protect the nearby headquarters of the Interior Ministry, while traffic was being redirected from the square. EPA/AMEL PAIN
A general view of Tahrir Square shows makeshift tents burning after after the Egyptian army came into the square and clashed with protesters, in Cairo, Egypt, 20 November 2011. EPA/KHALED ELFIQI
