I think I am glad I did not see the thread.
"When in Rome, do as the Romans do."
When visiting a foreign land, follow the customs of those who live in it. It can also mean that when you are in an unfamiliar situation, you should follow the lead of those who know the ropes.
I think what part of the problem is, is that there's no longer the expectation, for whatever reason, that those who speak Spanish are expected to blend into America, which is an English-speaking country. The mind-set has changed from a melting pot, where immigrants learn to be Americans (collective) rather than retain most everything about the country from which they came and learn how to blend in to the American culture--assimilate--but still retaining their culture at home, etc. Don't think that this hasn't caused resentment in areas, especially those closest to the southern borders.
Nothing, I suppose.
Best I remember (and my memory may be faulty.. either that or things are changing, and not for the better.) Conservatives were free market.