Only power restrains power. That restraining power is expressed in the existence and activity of oppositions. Oddly and fortunately, it is observable that the restraining influence of an opposition much exceeds its apparent strength. As anyone with experience in any organization knows, even a small opposition, provided it really exists and is active, can block to a remarkable degree the excesses of the leadership. But when all opposition is destroyed, there is no longer any limit to what power may do.
