Maybe unpopular but I actually have more of an issue with Asians than Latinos.
A lot of Chinese immigrants seem to fantasize about the day when China surpasses the US as a superpower. They have delusions of grandeur when it comes to overtaking the West--"China's century" etc. It reminds me of the way Japanese talked in the 1980s about their ascent.
Moreover, I find many Asian values to be toxic to our culture. The clannishness, the lack of self-expression, the lack of sociability/general awkwardness, and the selfish "me first" attitudes are all pretty common. To put it all in an anecdote, I remember there was an all-you-can-eat buffet I used to go to in my old college town. The old Asian ladies would literally show up with shopping bags, fill their bags with food out of the buffet, and leave without even eating. I find Asians are often insensitive to a lot of the social and cultural norms like that, that we tend to value in the West.
Moreover, a lot of young Asian kids are being drawn to radical leftists politics on college campuses. They have this weird obsession (as I've written about on here a few days ago) with getting the blacks to like them, even though it's a totally one-way street.
Lastly, even if I have many issues with the latino and black communities, I think I've always respected that there is something "warm" to their cultures. Mexican people are incredibly gregarious--they have massive parties with the whole extended family, they invite everyone, and everyone is always welcome. As for blacks, you go to any black neighborhood and it seems like everyone knows each other. Everyone's outside, people are socializing, and I know it sounds cliche but they all call each other "brother and sister." I think that's really cool.
I find that kind of warmth to be totally lacking in Asian culture.
Finally, and more big picture, I don't like these kinds of questions because they all seem to have the same underlying message: well, okay, you don't want massive amounts of THIS group in your country, but what about THIS one??? Why can't white countries just be majority white and stay that way indefinitely?