I say indie fans. Now now. No rants. Its my opinion that everybody already knows, lets leave it at that.
Metalheads of course tend to be huge douchebags as well. Theres some of them that can be pretty damn illiterate and socially inept. Punk fans can also be pricks, and hardcore fans are just assh*les. And of course everyones favorite. Emos.
And I know I'm biased when I say I think prog fans tend to be pretty open minded. But as with any kind of fan, there are exceptions. We have our share of idiots. I remember this one guy at progarchives who called Radiohead music for people who like Britney Spears and that Amnesiac was a bad ripoff of Pink Floyds The Division Bell.