I think nationalism is good, but from a different perspective. I hope it won't stop at national level. Globalization is definitely happening, but along with that a nationalism movement could bring decentralization and stronger communities at root levels. You know the people that are ignored.
You have a point there, but the way the nationalism is going right now it's like the turtle that's hiding in it's shell.
We need to think more global, and of course to think of a way that every voice could be heard.