An uncle by marriage was a pharmacist and corpman for America in WWI.
He had 3 German uncles and their wives, who survived WWI, and they basically were starving like many Germans at that time.
So he brought the uncles and wives over to America to live on the farm he had inherited. They worked here for a few years.
By that time WWII had started, and he found out that the uncles were potentially violent Nazis and involved with a local bundt.
He turned them into the FBI, the men/uncle were arrested sent to a hard time prison in Kansas for the duration of the war.
Their wives were brought to Vinita,Okla and housed in a former mental institution until the war ended. One went back to Germany with her husband, the other two divorced their Nazi husbands and spent the rest of their lives on my uncle’s farm. They loved America and became citizens.
Hitler killed and ruined lives from Europe to America in many ways.