Other forms: separatists
A separatist is someone who believes certain groups of people should live independently from the larger group. Often religious separatists form new denominations after they break off from a church.
Separatists are typically members of a minority group that wishes to protect itself or its identity from the majority group. There are political separatist movements all around the world, including Catalan separatists in Spain, who believe that Catalonia should be an independent nation, and French-Canadian separatists in Quebec.