Hipster or Scumster?

Hipster is a slang term which appeared in the 1940s. In the 1990s and 2000s it was used to describe young, recently-settled urban middle class adults and older teenagers with interests in non-mainstream fashion and culture, particularly alternative music, independent rock, independent film, magazines like Vice, Clash and Adbusters, and websites like Pitchfork Media. In some contexts, hipsters are also referred to as scenesters. The term is sometimes used in a derogatory manner, referring to someone who moves from trend to trend while claiming to be outside of mainstream culture.  
Here's a funny descriptive drawing of a Hipster for those who don't know.