Haiti's government imposed a curfew and declared a state of emergency Sunday after armed gangs overran two prisons and released thousands of inmates. The country has struggled with increased violence and the rise of gangs in recent years. According to United Nations estimates, armed gangs either control or have major influence in approximately 80% of Port-au-Prince and the metropolitan area around the capital city. One major gang leader, a former Haitian national police officer, has said he seek