 At least six people have been killed in an attack at a Rohingya camp in Bangladesh's Cox Bazaar, the latest incident of violence in the world's largest refugee settlement. More than a million Rohingya live in a cluster of refugee camps in southern Bangladesh, with most having fled neighboring Myanmar during a military crackdown in 2007. The sprawling settlements have become increasingly violent, with armed gangs vying for power, kidnapping critics, and warning women against breaking conservative Islamic norms.