But many of our beliefs about them are stereotypes, and one of our values is that individuals should be judged by their actions, not their skin color or nationality.
Also, my preferences are not a basis for law, unless they do significant harm, and not for excluding immigrants. I am not the judge of others; freedom means freedom for others to do things that you don't like - otherwise it's meaningless.
Also if you think the west is one of the more racist or sexist place in the world you are naive in the extreme. The immigration policies of "far right" European parties are completely mainstream in East Asia. If a party advocated for a similar immigration policy to say, Chinas, they'd be labelled as Nazis and lynched by a diversity mob.