16-year-old honor student beaten to death in Chicago. Why are gangs so prevalent?

A cell phone video captures the beating death of Derrion Albert a 16-year-old honor student. http://cbs2chicago.com/local/derrion.albert.investigation.2.1212436.html Silvonus Shannon, 19; Eric Carson, 16; Eugene Riley, 18; and Eugene Bailey, 18, a… more »