A narrow-minded nonconformist.
Nonconformists travel as a rule in bunches. You rarely find a nonconformist who goes it alone. And woe to him inside a nonconformist clique who does not conform with nonconformity.Eric Hoffer
It gives me great pleasure, indeed, to see the stubbornness of an incorrigible nonconformist warmly acclaimed.Albert Einstein
Whoso would be a man must be a nonconformist.