The underlying problem in most cases (of youth violence across the world) is drug addiction. I recently spoke to someone who had to quit an overseas job and return home because his teenage son had started engaging in criminality, after a drug addiction problem at school. He was telling me how widespread the problem is, and how accessible drugs are to kids via online channels.
Much of the Foxtrot Gang is associated with the PUK as much of the Kurdish community in Scandinavia is Sorani (Kirkuk-Sulaymaniyah-Kermanshah)