I once worked at a place where a few of the guys organized an informal "bring your gun to work day" each week, where we'd go target shooting after work. Well at some point corporate got wind of it and, of course, freaked out and banned it. We had enough people who objected to the ban to make a stink of it (I hesitate to say we were "up in arms over it"), and eventually after negotiation we agreed to keep everything locked up in our cars in the parking lot.