It’s a tough life: Bihari migrants in Chennai   By Madhumita Dutta Tamil Nadu has more than 10 lakh migrants, doing jobs that local workers shun because of poor pay and dangerous working conditions, but they are easy targets of prejudices against ‘north Indians’. Last weekend, a dishevelled, bare-chested man was almost done to death in Chennai. Police and scores of bystanders watched the young man being beaten unconscious. A few even cheered and egged on the mob. Barely three days before this incident the city witnessed the killing of five men, allegedly involve in a recent...