Yes I have heard of Polish jokes....
Were these jokes before or after 10,000 Polish people were murdered, raped or beaten??
Care to tell me when those jokes turned into policies that were implemented for 200 plus years..
An interesting thing about origins of Polish jokes...that it too came from white folks.....but at that time, white folks didn't really see themselves as "white" -- especially like we have come to know it today....I wonder who even created that artificial construct...anyhoo.........The Nazis really made demonizing Polish people a thing....wonder who forced white folks here to adopt that same demonization....anyhoo....
Did you know that many of the early Euro immigrants were discriminated against...some of them were able to avoid some of this discrimination by changing their surname -- so people didn't know Mr. Smith was actually named Mr Kolowaski or Goldstein....easier to avoid discrimination when you can easily "pass" for white...since you can't just look at Polish person or Irish person and just know they aren't "white"
It prompted one early Slavic immigrant to say --
“You soon know something about this country. … Negroes never get a fair chance.”
This is when many of Euro immigrants were just later called white.....because they felt there was some intrinsic value in the label....funny how that works.....I think this is why folks like you have such a hard time running that bullshit on people who know their history...