Barrio LibreThe city of Nogales straddles the border running between Arizona and Sonora, Mexico. On the Mexican side, marginalized youths calling themselves Barrio Libre (Free 'Hood) employ violence, theft, and bribery to survive, often preying on undocumented migrants who navigate the city's sewer system to cross the US Mexico border. In this book, Gilberto Rosas draws on his in depth ethnographic research among the members of Barrio Libre to understand why they