With dangerous youth gangs becoming increasingly visible in the United States and Central America, a March 11 conference brought together leading experts to share information about policies to reduce the incidence and influence of gangs.
Sudhir Venkatesh, a professor of Sociology at Columbia University, who as a young sociologist studied a Chicago crack-dealing gang from the inside
Tim Harford is the author of The Undercover Economist, is a member of the Financial Times editorial board and writes a regular column for the FT magazine.
Sergio Aguayo, professor of political science at the Colegio de Mexico.