Democracy is a lousy form of government in some respects – it is particularly bad at long-term planning, for no event that lies beyond the electoral event horizon can compel a politician to pay attention to it – but it has two gigantic benefits: it handles transfers of power peacefully, and provides a pressure relief valve for internal social dissent. If enough people get angry they can vote the bums out, and the bums will go – you don’t need to hold a civil war.