I just found this thread and I believe I have to say something too.
Please always remind yourself that we are using only written language here. It is unlikely that one always understands posts in the way they were meant by thse who wrote them. If i feel offended I always try to figure out if the person really wanted to hurt me or my country.
On the other hand I can understand you perfectely. A few years ago I stayed in England for a month with a host family in Brighton and they asked me the following:
"Don´t you feel ashamed beeinig an Austrian because Hitler was Austrian?" This did make me angry in fact. However I stll write them letters from time to time and will visit them next time i come to England.
Anger is understandable but more necessary is forgiving.