Definition from Wiktionary, the free dictionary
- The members of a political or social group espousing extreme, fanatical, or irrational views.
1913, Theodore Roosevelt, Theodore Roosevelt — An Autobiography, ch. VII, page 211:
- Among the wise and high-minded people who in self-respecting and genuine fashion strive earnestly for peace, there are the foolish fanatics always to be found in such a movement and always discrediting it — the men who form the lunatic fringe in all reform movements.