Right wingers

 Right wing MPs don't like right wing extremists being described as "right wing". 

Well, I don't like that those anarchists in the early 20th century who were violent, and abusive despots like Stalin, were described - or considered to be - left wing (and there were plenty of right wing despots - Pinochet, and the petty tinpot despots Reagan supported - especially in Central America). 

Unfortunately, wherever you are politically (and no matter what social group you are in), there are going to be people who misapply your principles, or do what they foolishly (people tend to be at different stages along the learning curve, and that, in my experience, can be a major problem - I've seen it destroy at least one group, and cause problems in MANY other situations) think is beneficial, or simply use what you stand for as a cover. Managing those problems is part and parcel of every group or movement. 

Trying to define them out of your group is censorship, not dealing with the problem, not being genuine about your principles.