Book excerpt: Sin Salida' ('No Way Out') by photographer Tariq Zaidi documents the impacts of the notorious Mara Salvatrucha gang (MS-13) and its rival Barrio 18 gang members on El Salvador. By depicting the gang members, police, prisons, murder sites, funerals, and the government?s war against the gangs, Zaidi illustrates the control the gangs have over the wider Salvadoran society, the violence through which they operate and the grief and loss resulting from the violence.