culture warrior
noun /ˈkʌltʃə wɒriə(r)/
/ˈkʌltʃər wɔːriər/
(especially US English, often disapproving)- a person who is active in trying to protect a particular culture or set of values that they think is under threat, especially conservative political values in the US
- A self-proclaimed culture warrior, he campaigns against abortion and gay marriage.