UN is a gang based in BC known for all its many ethnic origins of the members. They've been in a war with RS (Red Scorpion) in the lower mainland that makes Calgary's own gang situation seem like school yard shit. Both these crews are competing over running drug lines.
Recently police have been catching well known gangsters from Calgary and Edmonton associating with members of both RS and UN, hinting they are spreading out here.
Its been rumored that UN has absorbed/taken over Calgary's own FK(Fob Killers) and now that a known UN gang banger was shot dead in Calgary, it wouldn't surprise me.
As alluded to by those who are not surprised, with the tension going on between some crews that frequent some of these clubs, we should be happy it happened outside and was isolated to those involved.