Part of the modern anti-racism religion is that all western countries need large amounts of immigration (don't ask why, it's an article of faith).
This is very true. Many multiculturalists treat their ideology as a religion where they declare themselves to be unquestionably virtuous so as to attract praise from peers while delivering judgment and scorn upon those who do not convert and submit to their polluted leftist beliefs.
Middle Easterners are mc-immigrants...countries like Sweden and Germany can still congratualte themselves on how tolerant and anti-racist they are and how attractive they are as immigrant destinations.
I would add that the true racists are the white liberals in places like Sweden and Germany who objectify non-white, non-European McMigrants as things to be pitied and fawned over by the public at large while comfortably knowing that they themselves can do so from their ivory towers where the site of McMigrants are limited to their own ephemeral need for taxi drivers, cooks or cleaning staff.
What the leftists fail to comprehend is that McMigrants have no desire for themselves or their children to stay at the bottom rung of any society they go to.
Leftists will only change their tune when their own positions of power in politics, the media, finance, etc. are subjected to the same scrutiny and criticism of being "too white" and demands made upon them to give up their own seats for the sake of "diversity and "inclusion".
but with this global warming taking place on the planet, people with darker skins will be better adapted to a new environment coming up
That would only make sense if the ozone layer was being depleted and UV radiation was increasing. However, global warming is being attributed to manmade greenhouse gases being trapped in the atmosphere and absorbing solar heat increasing ambient temperatures not levels of UV radiation itself. Even then climatic changes with what some critics say will be "runaway" global warming there is no evolutionary way that humans would ever be able to adapt to any future changes. Having darker skin won't protect anyone from ever increasing levels of CO2, rising sea levels, frequent catastrophic storms and expanding desertification where no flora or fauna can exist. And it is a complete myth anyway that people with darker skin are immune from skin cancer.