A look at the dangers and possible causes of gangs and teenage delinquency including over-crowded and under-funded schools with few after-school activities and over-worked parents who have little time to spend with their children.
1988
2008
2001
1970
1985
2014
1982
1966
2005
1973
2009
2000
2013
1927
1952
2003
2006
1976
2002
1983