For example, the assumption of Seii Taishogun, who was the sovereign of samurai government which had supremacy throughout the country, was claimed to be granted by the Emperor in a form of Imperial proclamation, and most of the time, the man at power used the Emperor's authority to make a political opponent as choteki (enemy of the Emperor) to justify his right to rule.
例えば全国に支配権を敷いていた武家政権の君主である征夷大将軍への就任も形式上は天皇の宣下によって行われることになっており、その権力者は天皇の権威を利用し、その政敵を朝敵（天皇の敵）などに指定させ、その統治権を正当化することが多かった。