Probably easier to list what I haven't changed my mind on. I always strongly opposed amnesty, multiculturalism, relativism, affirmative action, gun bans, and sexual prudery (or at least, thought that people should have a choice to have sex or look at porn or whatever even when I was religious). Of course, I've trended hard to "the right" (alert the SPLC!) since the bail outs and the current joke President assumed office.
Quasi-fascism is pretty fun, huh?
Ah so you're calling Mr. Dees then?
What is objectionable about "multiculturalism"
Several reasons:
1. High levels of diversity - religious, racial, whatever - tend to erode social trust (see Robert Putnam's work on this). Although even before I read that it was pretty self evident to me just looking at the real world: look how Scandinavian nations or Japan function. Then look at the attitudes of more diverse areas. People unfortunately tend to only trust "their own kind," particularly in anglo-saxon societies. It's not an insurmountable problem, there are some societies like Singapore for example that are highly diverse yet have high levels of trust in institutions and efficiency. But those tend to not be liberal democracies and they seem to be the minority. I just don't have a very rosy view of human nature in general. Again, one of the reasons I've never really identifies as a liberal or "progressive" or whatever.
2. Not every (sub)culture is compatible with one another or wants to co-exist. I don't mean that in a veiled anti-muslim way either, or at least I'm not singling out muslims when there are plenty of Christians that want to criminalize who I am or worse for example... Having a functioning society means that there has to be some degree of assimilation, conformity, what have you. I think we've failed at that.
3. Let me put it this way: Today people are generally horrified by the IMMENSE pressure we put on southern and eastern Europeans to basically become as much as possible like the WASP majority. We made them drop their names, customs, food, religion, etc. But how successfully do you think Italians, Greeks, Poles, Russians, etc. would have assimilated into society if we had more modern policies in place? Like bilingual education, ballots, housing forms, mandated recognition of their customs/holidays, government recognition of them as separate ethnicities, etc..? They wouldn't have assimilated as fast if ever. Doubtful they'd be perceived as white eventually either. And obviously a lot of people in those groups are as dark if not darker looking than "hispanics."