In all seriousness, I believe that a significant number of the "grass roots" of the anti-SUV movement are subconsciously motivated by jealousy. The anti-General Aviation mob is strongly motivated by the same...
I don't know anything about the anti-General Aviation mob, but I'm sure jealousy could be motivating them, just as it does the anti-SUV movement, the "I hate Rush" crowd, etc., etc., etc.