Di Xin
Mencius emphasized the significance of the common citizens in the state. While Confucianism generally regards rulers highly, he argued that it is acceptable for the subjects to overthrow or even kill a ruler who ignores the people's needs and rules harshly. This is because a ruler who does not rule justly is no longer a true ruler. Speaking of the overthrow of the wicked King Zhou of Shang, Mencius said, "I have merely heard of killing a villain Zhou, but I have not heard of murdering [him as] the ruler."