Prisoners, back, try to contact relatives after a rebellion at the Colonia Agroindustrial prison in the Aparecida de Goiania Complex, in the state of Goias, Brazil, Monday, Jan. 1, 2018. Inmates from rival gangs battled at the prison Monday, leaving several dead and more than a dozen injured, authorities told the Brazilian news site G1. (Claudio Reis/O Popular via AP)