I don’t know anything about USW; except that they are from NRW, probably from the area Essen. As I have found stickers with „Unfug Spass Widerstand“ spread allover the city, I suppose that the name of the crew is an acronym of
- Unfug (mischief)
- Spass (fun)
- Widerstand (resistance)
But it may be wrong – I’m not sure.