the radical and irresponsible people in social organization or political party
Don’t let the lunatic fringe of our group get past the security of the campus.
lunatic fringe: define #2
A live internet radio show hosted by underground prank call legend KDK (of kdkprankcalls.com) that airs every Saturday night on several prominent internet radio stations.
Lunatic Fringe is the best show in all of internet radio.