Government intervention refers to the ways in which a government regulates or interferes with the various activities or decisions made by individuals or organizations within its jurisdiction. The effects of this can be positive or negative.
Governments are mandated to maintain a certain level of cohesiveness in the various factions within it. They achieve this by forming laws and regulations that the citizens need to follow. Occasionally, certain situations require the government to step in and impose its authority - either by deterring certain activities, or by forcing a certain action to be taken. This sovereign authority by the government can be utilized towards noble goals, or towards malicious goals in dictatorial environments.