Political repression is the act of a state entity controlling a citizenry by force for political reasons, particularly for the purpose of restricting or preventing the citizenry's ability to take part in the political life of a society, thereby reducing their standing among their fellow citizens. It is often manifested through policies such as human rights violations, surveillance abuse, police brutality, imprisonment, involuntary settlement, stripping of citizen's rights, lustration and violent action or terror such as the murder, summary executions, torture, forced disappearance and other extrajudicial punishment of political activists, dissidents, or general population. Political repression can also be reinforced by means outside of written policy, such as by public and private media ownership and by self-censorship within the public.