Activists shout anti-terrorism slogans as they hold posters with Arabic slogans that read, "Egypt is entrusted to us. The army and people are one hand," during a rally in Cairo, Dec. 26, 2013.
An activist holds a sign with an anti-terrorism picture and Arabic that reads "terrorists brotherhood" during an anti-terrorism demonstration in Cairo, Dec. 26, 2013.
Egyptian police stand guard after an explosion hit a public bus in Cairo's eastern Nasr City district, Dec. 26, 2013.
Bus driver Adel Abd El Fatah sits inside a damaged bus after a bomb blast near the Al-Azhar University campus in Cairo's Nasr City district, Dec. 26, 2013.