To be honest, I know more people who don't fit into the stereotypes than I know people that do.
I know a few people that you would call, 'Emos.' I haven't actually met a single emo who is depressed and / or cuts him / herself. Yet everybody knows that emos cut themselves.
I would class myself as a Goth. People would think I am weird for doing so. I've been called a witch, a vampire, and people have told me to go and cut myself like the depressed individual I am. I'm honestly one of the most upbeat people I know. I don't have anything to be depressed about and if I did, I would look on the bright side of it. It's the same with most of the friends of mine who are gothic.
Whoever up there said that EVERYBODY judges people on thier looks no matter what they say... that isn't true. Somebody who has spent their lives being judged because of their looks will not inflict the same on others. I don't see a chav and immediately think they are going to stab me. I wait for the nasty comment before I judge them.
I think it's horrible that people do that, though. My mother continuously talks of a time when you would go to a party and have to go home because somebody else was wearing the same dress as you. Nowadays, they all go to clubs like sheep. It's all wearing what's 'in fashion' and not what they like. And somebody who wears what they like regardless of the trends is weird to them.
And I know people are going to be responding to this with, "but most of the stereotypes are true." Of course some people will act like the stereotype. That's how the stereotypes get started. But you shouldn't judge an entire group of people based on the few that you know or have seen. By that argument, I can judge most of Britain (where I live) and claim that they are all drug addicts, alcoholics, adulterers and bad parents, simply because that's what you see on the Jeremy Kyle Show.