Second Amendment advocates mingled with the lunatic fringe, celebrating the American Revolution and Tim McVeigh.
For sure, each of the coalition parties has its lunatic fringe.
They are the lunatic fringe minority, much like school shootings in America.
Derogatory name for the extreme radical members of a group, especially in politics: “The candidate referred to the organization as being on the lunatic fringe of conservatism.” The term was coined by Theodore Roosevelt.
The radical and irresponsible sector of a group or party: The party has been turned over to its lunatic fringe
[1913+; apparently coined by Theodore Roosevelt in History as Literature]