All the civil wars I can think of were started by the equivalent of progressives, not conservatives. Take the US Civil war; Democrats. Take the Spanish Civil War, Franco, Fascist. Conservatives to not start civil wars. Nor is there anybody who would finance it as Conservative causes don’t attract money so much as Fascist causes do. We will get incrementally stepped on until, 30 years from now, Conservatism will be illegal.
You might want to look at the most extreme conservative actions ever taken. Singapore’s government is the most extreme conservative case that I know about. During the threat of communism they locked up the socialists and communist that were government officials. Ever since then the conservatives has been in control.