Marked v/s Unmarked

I first came to realize the concept of marked and unmarked while in high school. During junior year the school system likes to have university fairs so students can meet with different universities and find out more about them. But since the whole county comes it included socio-economic sectors that were complete opposite from mine. There were kids from lower class areas and this not a problem for me but for some reason especially the Hispanic kids began taunting me and even asking "how the hell a Hispanic, could be living in Potomac" or asking if I was too good to be around them. I have never found my self to be so defined as I was that day, I never really considered myself a Hispanic kid, but it just went to prove that I'm still living in a world that people notice marked and unmarked differences.