Give examples from history when the divergence of interests of the state and the people led to grave social consequences.

One of the most important conditions for the successful legal regulation of public relations is the implementation of the principle of legality in the state. Legality is the strict implementation of laws and other legal acts corresponding to them by all state bodies, officials and other persons.
It is she who shows the attitude of the state, public and political organizations, individual citizens to the law and its implementation. So the principle of legality cannot be implemented in a country where strict control over the legality of the actions of individual citizens is established, but the state itself violates the rights of people enshrined in laws. It cannot be carried out in states where the population disrespects the laws, ignoring many of their requirements.