Ousted Egyptian President Mohamed Morsi supporters and opponents clashed in downtown Cairo Monday, mutual emission birdshot and threw stones and fireworks, witnesses said.
State news agency said that from a gun shot to the chest, while 21 people required hospitalization, the head of the medical staff said.
Blood and broken glass littered the sidewalk duel between both sides of the conflict from the motorcycle and the worst political violence since July 16 in Cairo, when seven died in the confrontation was picked up the wounded man.
State news agency said that 20 "troublemakers" were arrested, did not disclose further details, if they are ousted president's supporters or detractors.
Police fired tear gas to break up the crowd, Mursi enemies say security forces is clearly on their side.
Samir Hafiz said: "These are our fascist police attacked us again, may God punish them,", 22, cut his hands and face, pro-Mursi activists threw stones at police from behind.
Witnesses said hundreds of young men clashed Mursi of the Muslim Brotherhood movement's supporters seem to try to enter Liberation Square (Tahrir Square), the epicenter of the Egyptian army led overthrow of the democratically elected Islamist leaders in July 3 massive demonstrations.
"They fired us with birdshot and pistols, they tried to overrun the square." Said 41 Tariq SABIR,, the oil company's employees, who was wounded in the thigh birdshot.
As dusk fell, the return faded conflict and Mursi opponents sit in Tahrir, triumphantly blowing whistles and chanting "We saved the square!"
Mass protests resulted in the February 2011 U.S. mortgage since the fall of strongman Hosni Mubarak, Tahrir Square (Tahrir Square) has been the focus of demonstrations.
Two people alone in the Nile Delta city Kalubia pro-and anti-Mursi protesters killed in clashes between the Ministry of Health officials told Reuters reporters.
Mursi since the fall earlier this month, about 100 people died in violence - Muslim Brotherhood supporters.
Violence also destroyed the Egyptian Sinai Peninsula this month. One civilian was killed and four security personnel were injured separately army checkpoint attacked by militants, security sources said on Monday.
Through the day after militants attacked angered Mursi's downfall, death six Egyptians, including two civilians, in the Sinai Peninsula bordering Israel and Gaza.
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