"lunatic fringe" meaning in English

{
  "forms": [
    {
      "form": "lunatic fringes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lunatic fringe (plural lunatic fringes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1913, Theodore Roosevelt, Theodore Roosevelt — An Autobiography, ch. VII, page 211",
          "text": "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.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The members of a political or social group espousing extreme, fanatical, or irrational views."
      ],
      "id": "en-lunatic_fringe-en-noun-gqub~E1b",
      "links": [
        [
          "fanatic",
          "fanatic"
        ],
        [
          "irrational",
          "irrational"
        ]
      ]
    }
  ],
  "word": "lunatic fringe"
}

{
  "forms": [
    {
      "form": "lunatic fringes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lunatic fringe (plural lunatic fringes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1913, Theodore Roosevelt, Theodore Roosevelt — An Autobiography, ch. VII, page 211",
          "text": "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.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The members of a political or social group espousing extreme, fanatical, or irrational views."
      ],
      "links": [
        [
          "fanatic",
          "fanatic"
        ],
        [
          "irrational",
          "irrational"
        ]
      ]
    }
  ],
  "word": "lunatic fringe"
}