El Zein, Rayya and Alex Ortiz. 2011.Signs of the Times: the Popular Literature of Tahrir Protest Signs, Graffiti, and Street Art. Shahadat,April. Available at:http://issuu.com/arteeast/docs/shahadat_january25_final?mode=embed&layout=http%3A%2F%2Fskin.issuu.com%2Fv%2Flight%2Flayout.xml&...