Ridicule based on arbitrary and frivolous attributes are shaped by jealousy and the associated urge to eliminate social competition. That's why the highly talented kids (even adults at times) are bullied. Meanwhile, such peer pressure has an awfully powerful influence on emotions and decisions. Both are fundamental human behaviors and they're not going away. The only way to overcome it is to burn some social capital by calling it out and protesting it. If you're lucky, you may even earn some social capital.

> or how most westerners are very uncomfortable with "skin lightening" as a beauty thing

I'm not sure I catch the meaning (due to cultural differences). Could you elaborate?