A corrections officers walks through the Enhanced Supervision Housing Unit at the Rikers Island Correctional facility in New York March 12, 2015. New York City is proposing to reduce violence among inmates at its troubled Rikers Island jail by limiting visitors, adding security cameras and separating rival gangs, Mayor Bill de Blasio announced on Thursday. REUTERS/Brendan McDermid (UNITED STATES – Tags: CRIME LAW POLITICS) – RTR4T64A