'Your papers, please' must never be heard in America

Adan Abdi worries that the students in his class show too little interest in education.
Mohamed said he has seen dead bodies on the street - most recently, when a man was shot because he refused to give a thief his watch.
Mohamed Deq Nur, a 14-year-old student in Mogadishu, Somalia's capital, said he remembers 2006 because he went a month without hearing a gunshot.