In The Political Potential of Upper Silesian Ethnoregionalist Movement: A Study in Ethnic Identity and Political Behaviours of Upper Silesians Anna Muś offers a study on the phenomenon of ethnoregionalism in one of the regions in Poland. Since 1945, ethnopolitics in Poland have been based on the so-called assumption of the ethnic homogeneity of the Polish nation. Even the transformation of the political system to a fully democratic one in 1989 did not truly change it. However, over the last three decades, we can observe growing discontent in Upper Silesia and the politicisation of Silesian...