r-old Manal Maatiri. “We need to see it to trust it,” Houda Biyad, a 28-year-old medical assistant, chimes in. “We need evidence,” adds 17-year-old Buhary El-Quasamy. When I point out that both Obama and al Qaeda agree on the basic facts that the U.S. killed bin Laden, she shrugs. “Well, I can say anything I want,