The Ethiopian revolution affected the city in many ways. Starting March 1974, there was some worker unrest; six people were wounded when police opened fire on demonstrating railwaymen and students on 17 April. Many Europeans, Yemeni Arabs, and Indians left Dire Dawa; the Greek and Armenian churches were eventually closed due to dwindling membership. On 3 February 1975, the Derg announced that the Cotton Company of Ethiopia was among 14 textile enterprises to be fully nationalized. The cement factory was also later nationalized. In August 1976, the entire leadership of the local branch of the teachers' union was sacked for alleged anti-revolutionary activities. Ten new officials were appointed pending fresh elections.