Subculture
Subculture - in sociology and cultural studies - part of the culture of the society, which differs from the dominant majority, and the social group of carriers of this culture.
Subcultures can basically contain a variety of interests, from musical styles to political beliefs.
Developing, subcultures develop a common style of clothing (image), language (jargon, slang), attributes (symbols), as the overall outlook for its members. A typical image and demeanor is a marker that separates "us" (representatives of sub-cultures) of strangers.
Image for a representative sub-culture - it's not only clothes, a demonstration of its kind beliefs and values that promotes the subculture.
Examples of subcultures: Goths
Punks
Emo