Just a group of people, just like everyone else.
I have a friend who is persian, so all you mother fuckers who want to bash them can fucking go to hell!
A word that's used to describe something (mainly fashion and music) that is "hip" and "cool". Many times MTV uses this word to hide the fact that they are secretly trying to turn it's viewers into drones who look exactly alike, and like the same music.
Fashion and music should be something someone actually likes because they think it's cool, not because everyone else thinks it is.