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. Repression tactics target the citizenry who are most likely to challenge the political ideology of the state in order for the government to remain in control. In autocracies, the use of political repression is to prevent anti-regime support and mobilization. It is often manifested through policies such as human rights violations, surveillance abuse, police brutality, kangaroo courts, imprisonment, involuntary settlement, stripping of citizen's rights, lustration, and violent action or terror such as murder, summary executions, torture, forced disappearance, and other extrajudicial punishment of political activists, dissidents, or the general population. Direct repression tactics are those targeting specific actors who become aware of the harm done to them while covert tactics rely on the threat of citizenry being caught. The effectiveness of the tactics differs: covert repression tactics cause dissidents to use less detectable opposition tactics while direct repression allows the citizenry to witness and react to the repression. 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.