Students for a Democratic Society (SDS) was an activist organization in the 1960s that protested the Vietnam War, racial injustice, and economic exploitation. For the most part, the organization favored direct action and protest, but a small faction attempted to realize change through conventional politics. This faction was never very popular within the group, most of which opposed traditional organizing and politics and sought a radically new form of social organization. Based on this information, you could say that members of SDS were part of a:
counterculture.
subculture.
ethnocentric group.
popular culture organization.
movement for cultural diffusion.