8 December 1941 | The first group of Jews were deported & murdered in mobile gas chambers in Kulmhof (Chełmno). The first German Nazi extermination camp began its operation. At least 152,000 people were murdered there.
Learn more about its history: https://chelmno-muzeum.eu/index.php?option=com_content&view=article&id=18&Itemid=135&lang=en