I generally agree with the other commenter here (who says he never worries about guns), but I thought it worth adding that the atmosphere can vary depending on

I generally agree with the other commenter here (who says he never worries about guns), but I thought it worth adding that the atmosphere can vary depending on the club. It's unusual, but not unheard of, to go through a metal detector (wand) at concerts and some clubs (say, a medium-size venue with space for ~500 and up -- much more unusual at a small club with space for 200, say). Why is there a metal detector? To keep guns and knives out. So, there can be caution and fear around guns in clubs. I don't think the fear is about just guns. I think it's about all manifestations of violence (knives and beat-downs too). Two examples that come to mind are the fan who was attacked at the LA Dodgers game (just a beating) and ended up handicapped, and three hipsters who got shot outside a small but influential indie club in LA (http://www.laweekly.com/2011-01-06/news/mongols-and-hells-angels-invade-hiptown/ http://www.laweekly.com/2011-01-06/news/mongols-and-hells-an...). Teaser quote from that last link, which is worth reading: "It seemed so cheesy, I thought it was a joke," says the guitarist, 30, whom we'll call Brad; he's a witness in the gunman's trial and fears for his life. "When he started shooting, I just stood there staring at him. I couldn't believe anyone would fire a gun into a crowd of nerdy indie-rock kids." It has to be emphasized that the above story was a "story" because it was so weird (I've been to that club, and it really is a classic indie rock skinny hipster hangout).