A man, standing on a street corner in a North Philadelphia neighborhood, USA, talks about issues of gun violence to a reporter (not pictured), 28 March 2007. Philadelphia, a city of about 1.4 million people known as the City of Brotherly Love, has one of the highest murder rates in the country. While the nation's other big cities - New York, Los Angeles, Chicago and Houston - are all seeing their murder numbers fall. Photo Credit: David Brabyn.