Pakistani schoolgirls, who were displaced with their families from Pakistan’s tribal areas due to fighting between militants and the army, chant prayers during a class to pay tribute for five female teachers and two aid workers who were killed by gunmen on Tuesday, at a school in a slum on the outskirts of Islamabad, Pakistan, Thursday, Jan. 3, 2013. Gunmen in northwest Pakistan killed five female teachers and two aid workers on Tuesday in an ambush on a van carrying workers home from their jobs at a community center, officials said. (AP Photo/Muhammed Muheisen)