Question to black-kpopers

I just wanted to know what other people in your school thinks of your wearing kpop stuff.My school had an few people who likes it.This how It went down to me
Girl:What does your shirt say?
Me:bangtan boys
Boy:Wouldn't it be btb?
Me:No bts
After I left they laughed behind my back.I really didnt care because,i have confidence wearing my favorite kpop groups shirt around.I like being different and trying new things.How would you react if someone started to judge you just because you like something different then the ordinary.