However events quickly began to slip from the Communists control. On 1 May 1990 the opposition groups held their first big demonstration in Frunze in competition with the officially sanctioned May Day celebrations, and on 25–26 May 1990 the opposition groups formed the Kyrgyzstan Democratic Movement as a bloc of several anti-Communist political parties, movements and nongovernment organizations. Then on 4 June 1990, ethnic tensions between Uzbeks and Kyrgyz surfaced in an area of the Osh Oblast where Uzbeks form a majority of the population. Violent confrontations ensued, and a state of emergency and curfew were introduced. Order was not restored until August 1990.