In the 1980s, Albanians of Kosovo started to demand that their autonomous province be granted the status of a constituent republic, starting with the 1981 protests. Ethnic tensions between Albanians and Kosovo Serbs remained high over the whole decade, which resulted in the growth of Serb opposition to the high autonomy of provinces and ineffective system of consensus at the federal level across Yugoslavia, which were seen as an obstacle for Serb interests. In 1987, Slobodan Milošević came to power in Serbia, and through a series of populist moves acquired "de facto" control over Kosovo, Vojvodina, and Montenegro, garnering a high level of support among Serbs for his centralist policies. Milošević was met with opposition by party leaders of the western constituent republics of Slovenia and Croatia, who also advocated greater democratisation of the country in line with the Revolutions of 1989 in Eastern Europe. The League of Communists of Yugoslavia dissolved in January 1990 along federal lines. Republican communist organisations became the separate socialist parties.