Police have shot dead 18 civilians in the deadliest day in Indian-administered Kashmir since protests erupted three months ago. A policeman was also killed when he was run over by a lorry. The BBC's Altaf Hussain in Srinagar says reports of Koran desecration in the US have stoked anger. Scores of Kashmiris have now died since June, when anti-India protests broke out after police shot dead a teenager.In Monday's protests, thousands of people defied curfews and took to the streets, chanting anti-India and anti-US slogans and burning effigies of US President Barack Obama, our correspondent says. An angry mob set fire to several government buildings and a Protestant-run school, as well as attacking a police station, he adds. Police fired live ammunition to break up the demonstrations, and confirmed that 18 civilians had been killed. Several of the deaths were reported to have occurred in Budgam district, with others reported in the village of Tangmarg, where the school was burned. One of those killed was a student aged 12 or 13, our correspondent says.