To clarify empowering the EU is literally the opposite of Nationalism or are you discussing the recent surge of 'American Exceptionalism' of the current US administration?

Brexit made to clear that for some people being in the EU is an important part of their identity so that enables EU nationalism for them.

There are racist European nationalists - the Anders Breivik type.

This website is not either. However I think its worth looking beyond Europe. Avoiding the US and China and a few other countries leaves a lot of possibilities.