What do you know......
Silesian "uprisings" anyone?
we are talking about expulsion of Germans after WWII here
Expulsion of Germans after World War II.
From 1944 until 1948, between 13.5 and 16.5 million Germans were expelled, evacuated or fled from Central and Eastern Europe, making this the largest single instance of ethnic cleansing in recorded history.
Estimated number of those who died in the process is being debated by historians and estimated between 500,000 and 3,000,000.