BULAWAYO, Zimbabwe (Reuters) - Hundreds of police backed by soldiers and army helicopters deployed in the Zimbabwean city of Bulawayo on Monday to prevent an opposition protest from taking place, a show of force that stopped a demonstration for the second time in four days.The Movement for Democratic Change’s (MDC) had called the Bulawayo event as it looks to rally support against President Emmerson Mnangagwa’s government, which it accuses of ruling with an authoritarian streak and blames for the country’s worst economic crisis in a decade.