I think part of the pride thing is that they get embarrassed if one of theirs is acting stupid. So that probably accounts for "Romanians are stupid" phrases in Romanian language.

> Romanians are very nationalistic ...

Interestingly I hang out with the immigrants and they are not very nationalistic. As most are trying to escape and forget about their old country. But my perception is strongly biased according to a particular (rather small) sample of the ones I met.