Asians, in my mind, are like Japanese, Korean, Taiwanese, Thai, Vietnamese, Chinese, etc. They tend to integrate and assimilate into Western culture much easier because despite their cultural differences, they still have compatible core values like morality, honor, respect, duty, etc., especially those from Japan, South Korea, and Taiwan. They also culturally place importance on personal hygiene and cleanliness.
Poop locusts are sub-scum. It seems like races from "sub" regions tend to be more on the subhuman side. You've got poop locusts from the subcontinent, and you've got sub-Saharans who are likewise uncivilized barbarians and struggle greatly to assimilate to civilized Western culture. Both races have their differences, but they also overlap quite a bit.