We have appearance discrimination implicitly. Of course people in any country like pretty and handsome people, but I think Korean like them especially. They do friendly for handsome and pretty people even if they are same-sex to them. And korean people want to be an attractive person. So they have the plastic surgery or diet. Maintaining their appearance is good for them, but someone has a lot of plastic surgery or starves to excess to be like idol. It is very problem. Another discrimination is about job. Korean people tend to ignore some job which need to do physical labor. Their jobs are also important, but some people think that poor and foolish people do hard work like cleaning, delivery. So they talk down to them, and ignore. Sometimes, people said " Study hard , if you don't want to be like them." to their kids in front of that people.