In german TV when they show Poles,it is usually reportage about thieving or border smuggling.
To play devil's (or Germans' - same thing) advocate: Anyone here ever heard of 'juma'?
pl.wikipedia.org/wiki/Juma
"Słowo to wywodzi się z rejonów nadgranicznych i określało rodzaj przestępstwa polegający na kradzieży towarów w przygranicznych, niemieckich sklepach"
"The word comes from border areas and described a kind of crime related to stealing merchandize from German stores near the border" (nb this isn't shoplifting bread for hungry children, it's breaking and entering and grand larceny)
There was an article on this some years ago in Gazeta Wyborcza which described how juma was the major industry in large areas of the countryside near the border. Not too long after I had a (weekend) student from that part of the country and surprised her when I used the word (she hadn't realized I knew Polish). I asked if she knew people who did that and she said yeah, a lot of people in her village supported themselves that way and she didn't see anything wrong with it (they're only Germans, who cares what happens to them?).
I don't know if the situation had improved but when large numbers of people cross the border to commit crimes I think it's okay for the country in question to be upset about it - especially when the country where the criminals come from doesn't give a rat's ass.
This is not to say that there isn't stupid prejudice and jerks in Germany (and completely illegal linguisic prejudice supported by the courts), just that viewing German attitudes through the prism of 'they're all nazis and hate us' is no more productive than Germans thinking 'they're all thieves' about Poles.
Kumbayah......