REUTERS/Jorge Cabrera Editor's Note: This article is part of an ongoing series on prison conditions and criminal justice policy around the world. Dozens of inmates were killed in a wave of violence that swept across Honduran prisons in recent weeks, as rival gangs staged a series of bloody riots and retaliatory attacks against each other. The country's penal system has a long history of gang-driven violence, but the recent killings represent a notable uptick, says Eric L.