i Register
In some senses, multiculturalism is marked as derogatory, colloquial. Watch for register when choosing this word.
noun
The characteristics of an organization, society, city etc. which has many different ethnic or national cultures mingling freely; political or social policies which support or encourage such coexistence.
Near-synonym: polyculturalism (several or many)
The truth is that diversity, a kind of multiculturalism if we want to call it that, is the norm in any society.
The cultural Marxism conspiracy theory.