Article Photos: Egypt mass protests challenge Islamist president 18/31

  An Egyptian boy wears a mask during clashes security forces near Tahrir square, where an opposition rally has been called for to voice rejection of President Morsi's seizure of near absolute powers, in Cairo, Egypt, Tuesday, Nov. 27, 2012. Egyptian protesters and police clashed in Cairo on Tuesday just hours ahead of a planned massive rally by opponents of the country's Islamist president demanding he rescind decrees that granted him near-absolute powers.(AP Photo/ Khalil Hamra)