In October 1932, the streets of Belfast were gripped by vicious and widespread rioting that lasted the best part of a week. Thousands of unarmed demonstrators fought extended pitched battles against heavily-armed police. Unemployed workers and, indeed, whole working-class communities, dug trenches and built barricades to hold off the police assault. The event became known as the Outdoor Relief Riot - one of very few instances in which class sympathy managed to trump sectarian loyalties in a city famous for its divisions.