It refers to a type of youth, supposedly uncultured, maybe a bit anti-social, perhaps even violent, but certainly marked out, at least from the point of view of the critic, by very bad taste.
它指的是那类所谓的没有化反社会甚至有可能有点暴力的青年,但是,至少在很多评论家的眼里看来,他们当然因为某种不好的爱好而自成一家。