Slightly close to topic, I have been a member of a couple of R/C model flying clubs, and they sometimes have extremely complex political issues.
+1 - never had anything to do with fixed wing gliding, but I was simply bemused by my 'welcome' at the few r/c clubs I've been to. And they wonder why the average r/c flyer is competing with Methusulah.
In general, only a minority of individuals are to blame, but in practice they tend to dominate.