The reasons were that they pretty much blame all the Poles for not helping them in WWII and believe we owe them compensation in the year 2010 for lost property. Jews give Poles a bad name. Ant-Polonism is in their blood.
Speak for yourself! It's not in my blood, never was, and never will be!
Anti-Semitic Poles give Poles a bad name.
And it was the Germans who stole my grandparent's house and shop, not anyone else, so if anyone should be paying compensation, it's the Germans. But most of us realise that this will never happen, so we just get on with life regardless. I don't hate Germans or Germany, btw - I just hate what a certain German regime did to us 70 years ago. Modern Germans aren't responsible, or to blame.
It's as ridiculous for modern Poles to hate Jews, as it would be for Scots to hate Pacific Islanders - where are all these Jews who Poles hate so much? I've been to Poland many times, and the only place I saw any obvious Jews was in Krakow - and the sum total was about 20. If Poles spent as much time on trying to improve their own country as they do on blaming "The Jew" or on going for "piwko z kumplami", then maybe the country wouldn't need EU funding!