Physical and verbal abuse of children is common in Bolivian schools. Children between ages 11 and 16 who are believed to have committed an offense have no right to trial and may instead be indefinitely detained in special centers on the orders of a social worker. Thousands of children live on city streets. There are also many child prostitutes, and many children who are trafficked to other countries to perform forced labor. A 2008 report by Pastoral de Movilidad Humana indicated that every month around ten children in southern Bolivia “disappeared and were presumed victims of trafficking.” The Defender of Children and Adolescents, a government agency that is charged with protecting children's rights, has 194 offices around the country.