separatism

(noun) a social system that provides separate facilities for minority groups. Synonyms: segregation.

(noun) a disposition toward schism and secession from a larger group; the principles and practices of separatists. Examples: "Separatism is a serious problem in quebec." "Demands for some form of separatism on grounds of religion have been perceived as a threat to mainstream education."

(noun) advocacy of a policy of strict separation of church and state. Synonyms: separationism.