I don't really care. But I dislike a few things about it.
1. How it is being pushed as an intrinsic good by neoliberal propaganda (it is at best neutral)
2. The depiction of any resistance to it as innately bigoted or racist.
3. Forced diversity agendas that misrepresents human nature and the fact that people tend to prefer those who resemble them and come from similar backgrounds when in fact, multi-ethnical societies tend to be more conflict prone unless steps are taken to erase cultural differences
Concerning #2, there is indeed bigoted aspects to anti-immigration trends, but not all arguments against it are necessarily racist and therefore immediately discountable. Libs think that all these imported brown people will think like them because they're being patronized, when more than half of them are coming from conservative, highly religious countries that hang gays and think women should be held in cages or whatever.
Liberals have this bubblehead mentality that doesn't realize many non-western countries are 50+ years in the past in terms of their social values and that immigrants will somehow reciprocate their views just because libs patronize them as inherently noble and magical nonwhites.
Finally, if the demographic shift is to continue to widen, immigration must continue apace. But speaking of America, it's already threadbare social support systems are already stressed, and it's a myth that mass immigration will produce millions of doctors and scientists. Most of them will just become regular American proles that will never get anywhere. I just think it's stupid to be pro immigration when we can't even take care of our own adequately.