protest , tear gas and water cannons , Cairo . 抗議 ， 催淚瓦斯 和高壓水槍 ， 開羅 。

Ahmed Gomaa / AP

Amr Nabil / AP

Khaled Elfiqi / EPA

Mohamed Abd El Ghany / Reuters
PhotoBlog - Thousands protest in Cairo as military fires back with tear gas and water cannons http://photoblog.msnbc.msn.com/_news/2012/05/04/11540090-thousands-protest-in-cairo-as-military-fires-back-with-tear-gas-and-water-cannons?lite

Asmaa Waguih / Reuters

Khaled Desouki / AFP - Getty Images

AFP - Getty Images
PhotoBlog - Several dead in Cairo as protesters are attacked http://photoblog.msnbc.msn.com/_news/2012/05/02/11500991-several-dead-in-cairo-as-protesters-are-attacked?lite

Source: Reuters

Source: Reuters

Source: Reuters
Egyptian Military Imposes Curfew on Cairo After Bloody Clashes [PHOTOS] http://www.ibtimes.com/articles/337539/20120505/egypt-protest-cairo-tahrir-square-clashes-violence.htm