Close call between

Nationalists, Militarists and Religious

Religious for the same reasons you named
Militarists cause They have a very PARTICULAR WAY of voicing their concern, AKA Through Coups Attempts.
Nationalists, because they keep pissing about aids camps and immigration.

Nationalists are the worst in my opinion, because I have a hard time finding them a use whatsoever

Environnementalists either, but at least they don't piss me off every 15min