The sheer amount of xenophobia and ethnic-nationalism/racism on HN that’s upvoted never surprises. I almost came to this thread expecting a flurry of xenophobic comments, and yup, I found it.
I don't have a strong opinion on immigration either way, like anything it can be a force for good or a distaster depending on how it's handled. But if there's one thing I hate, it's taboos and buzz words, mixed with hypocrisy for good measure. There is nothing inherently wrong about opposing immigration or disliking immigrants, your country is like your house, you are perfectly justified on not wanting guests in it, even if it's for 'wrong' (read : racist) reason. This doesn't mean I like or hold those opinons, but they are natural and justified, and people have the right to hold them.
I believe it is called progressive and liberal because African Americans and Native Americans have historically been enslaved or (nearly) exterminated by Europeans in North America.
What's wrong with being ethnic-nationalist?
Europeans are amazing and should be held up high.
They should stop and reverse the importation of the third world and remain European.
Not that this is an option for all countries, specially those that don't have unified history or culture. For example with USA it might make sense for native population.