Karachi  During the last three years, Sindh has consistently remained the most violence-hit province in the country, with thousands of killings in its capital, Karachi, a security think tank said in its report released on Sunday. However, because of the Rangers-led ongoing crackdown against criminals, the first quarter of 2016 saw a significant decrease in the number of murders reported in the province, especially in Karachi, the Centre for Research and Security Studies , an...