As a result of long lasting German colonisation and Germanisation, by the beginning of the 20th century Lower Silesia had a majority German-speaking population, with the exception of a small Polish-speaking area in the northeastern part of the district of Namslau (Namysłów), Groß Wartenberg (Syców) and Militsch (Milicz) and a Czech-speaking minority in the rural area around Strehlen (Strzelin). There were also Polish communities in large cities such as Breslau (Wrocław) and Grünberg (Zielona Góra). After the First World War, the bulk of Lower Silesia remained within Germany, the Bohemian part was included within Czechoslovakia, and a small part was reintegrated with Poland, which just regained independence. The German part was re-organized into the Province of Lower Silesia of the Free State of Prussia consisting of the "Breslau" and "Liegnitz" regions. In the interwar period, there were multiple instances of anti-Polish violence in the German part, and already in 1920 a Polish consulate in Wrocław was attacked and demolished by German nationalists. In the 1930s Poles and Jews were increasingly persecuted in the German-controlled part of the region.