Wiktionary
n. 1 (cx rare English) A political struggle for control over cultural institutions. 2 Conflict between different ideological groups, especially political conflict for cultural dominance between liberals and conservatives in the United States.
Wikipedia
Culture war refers to a conflict between traditionalist or conservative values and progressive or liberal values. Beginning in the 1990s, culture wars have influenced the debate over public school history and science curricula in the United States, along with many other issues.
The expression culture war entered the vocabulary of United States politics with the publication of Culture Wars: The Struggle to Define America by James Davison Hunter in 1991. Hunter perceived a dramatic realignment and polarization that had transformed United States politics and culture, including the issues of abortion, federal and state gun laws, global warming, immigration, separation of church and state, privacy, recreational drug use, homosexuality, and censorship.
In Canada, culture war refers to differing values between Western versus Eastern Canada, urban versus rural Canada, as well as conservatism versus liberalism.
Usage examples of "culture war".
I mean, there's only so much of this culture war a person can take.