Ethnoregionalist movements across Western Europe are gaining scholarly attention. Central European states usually have limited places in those studies. Still, in Polish Upper Silesia, ethnoregionalist movements have been present since 1989 and have stable support from the inhabitants of the region. Since at least 2002, ethnoregionalists have attempted to secure political representation among the Upper Silesians. Recently registered parties have used the ethnic identity of this minority group as the main tool to gain support in political elections in the region. This article applies social science and political science perspectives to the politicization of ethnicity. These equip the researcher to answer the question: How has Silesian ethnic identity become politicized? In responding, the researcher explores the consequences of the emergence of the ethnoregionalist movement in Upper Silesia.

Ethnoregionalism in Europe is a phenomenon usually studied in the context of Western Europe. Still, in Central and Eastern Europe, there are some social and political movements that can be categorized as ethnoregionalist. The phenomenon started to play a role even before the Great War and in the interwar period, but was suppressed during the times of socialist regimes. It resurfaced immediately after 1989 during the times of transformation of political systems to fully democratic systems when problems of decentralization, authority, and division of power became openly discussed. In this article, I compare two such movements in the context of their political potential. The Moravian-Silesian movement in the Czech Republic and the Silesian movement in Poland have both similarities and differences, but the article mostly focuses on the evolution of these movements.