It would be really sad if this report got translated as a bunch of young people robbing for fun. It is not about that.
"It is for 'kicks', but you've have to understand what the 'kick' is. The 'kick' is people who are victims for prolonged periods of time developing a cycle of revenge so that they then get a high from victimising someone else.
I did calm down reading the closing comment;
One of the things that kept emerging in our work was that... this was an extension of traditional bullying. That motivation of dominance, of proving that you were tough in the eyes of other people was a very strong theme.