integrationist

[ in-ti-grey-shuh-nist ]
/ ˌɪn tɪˈgreɪ ʃə nɪst /

noun

a person who believes in, supports, or works for social integration.

adjective

pertaining to, favoring, or being conducive to social integration.

Origin of integrationist

First recorded in 1950–55; integration + -ist