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In page Lubin:

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During World War II about 70% of the town's buildings were destroyed. In 1945 between the days of 8–10 February Red Army soldiers mass-murdered 150 German pensioners in an old-people's home and 500 psychiatric hospital patients in Lubin.[2] The city eventually became again part of Poland, although with a Soviet-installed communist regime, which stayed in power until the 1980s. The remaining German population of the city was either expelled in accordance with the Potsdam Agreement, or prohibited from returning home by the communist authorities.[citation needed]