Yeah, that's what I was referring to. I have some relatives in the UK, and I don't directly talk to them, but I have heard some (anecdotal) murmurings suggesting such things from my relatives who live here and who are in contact with those in England. There's also some references to it in the media, but.. well, you know how the British media can be, so never having set foot in the UK, I couldn't really say much about it aside from hinting at it slightly.
There a lot of Poles in Canada and nobody really discriminates against us en masse, even if the go-to Polish racial slur is generally not frowned upon by Anglo-Saxon society. 90% of the time it is said in jest, so most of the time nobody really cares. At least I don't - I guess I'm used to it. It shouldn't be like that, I guess, but it's not a huge deal, and I have more important things to worry about, etc.
I should add that when my family moved to Canada, there was no internet around yet, and so most people just didn't know anything about Poland. I did hear occasional ignorance coming from random Canadians, a lot of "Polish people are stupid, right? Submarines with doors? Cavalry charging tanks?", etc. It wasn't systematic, but it did rear its ugly head on occasion. In grade 10 history class we learned about Polish cavalry charging tanks for example, even though that was just Nazi propaganda.. That made me feel like an idiot, when I sat there in class, because I didn't know the truth, and it made me feel like I came from a place that was kind of.. backwards. The class ate it up and I just sat there feeling small. The laughs from the class made me feel inferior.
With the coming onto the scene of the internet, Poland (re)joining the west, etc. I can say that most of this doesn't exist here anymore. I don't come across any anti-Polish hate, ignorance, or bigotry. It is not a problem here anymore, at least from my anecdotal experience and that of my family.
And my only problem with Polish jokes is that most of them aren't funny.