People who are in positions of power to legislate aviation, yet have absolutely no knowledge or understanding of what they are attempting to control, e.g. EASA, DfT, airfield security jobsworths etc., and hence end up making a complete arse of things.
Pillocks e.g. EcoFascists, Clueless Councils, the Government etc., who take great delight in attempting to build great sodding obstacles in the close vicinity of airfields (mostly in the form of wind turbines that create less power than an average fart) either 1) out of complete ignorance of consequences or 2) in a deliberate attempt to force said airfields to close.
People who come onto PPRuNE in order to moan about things that adversely affect aviation. Oops bugger that sometimes includes me.
Smithy