You know how K-pop is kind of racist towards black people? How they like to portray them in dramas as gangsters, loud and rude people?  This describes how different people can be beautiful. 

"They're scared of you because they don't understand you"

"So they just push you away"

The rap was written by Amber. In the begenning, she says "It's all about me" so I'm guessing Amber is talking about her hardships as a foregner in Korea. Anyways, it's a great song. You guys should give it a listen. It's really good.