I'm looking for a word where people are critical of an opposing idea, usually without examining it, simply because it's different from what people already believe.
I thought that fascist (of or relating to fascism) was the word I was looking for, but Wiktionary defines fascism as:
fascism (usually uncountable, plural fascisms)
- Any right-wing, authoritarian, nationalist ideology characterized by centralized, totalitarian governance, strong regimentation of the economy and of society, and repression of criticism or opposition.
The only part of the meaning I want is "repression of criticism or opposition", without the political implications of the remainder of the meaning.
To refuse to admit the possibility that contrary ideas could be valid is ___.
The oppression of people who believe differently is ___.
It doesn't necessarily have to be an adjective; a noun would probably be workable too.