Where on earth did you get that idea?! For one loads of Poles came here when the germans invaded to fight along side us, we welcomed them and a lot stayed afterwards. Older Polish people speak very highly of the English and the same can be said of older english people about poles, my grand parents for example have recounted many war stories to me about the Polish what great fighters they are.
I've got lots of polish friends, I even had a polish girlfriend and she certainly didn't hate me
I even went over and met her family and I've never felt more welcome anywhere in the world. The only english people that hate poles are the degenerate morons who can't understand or accept cultural differences period! and the differences aren't big.
I can see your point about how "racism" only applies to ethnic minorities, but thats mainly because white folks don't take so much offense to it or stand up from themselves nor do we use it as leverage. Its important not to forget that race discrimination laws here and in the states apply to all races!
I can also understand up to a point why African Americans hold onto the slavery issue because they have been so down trodden for so long compared to african english folks, in the UK we have been far more accepting of other races than they are in america. America claims to be so civilised, modern and forward thinking but they have got a long way to go to be anything close to the UK and europe.