Template:PolicyCards (Civ6)Police State is a Diplomatic policy card in Civilization 6.
Strategy
This is quite a useful policy for multiplayer games, where humans can use their spies for maximum destruction ( think Recruit Partisans ) and also, in singleplayer, when you are having trouble stopping AI spies.
However, the reduced amenity/loyalty ( people do not like being watched! ) can cause troubles if you have problems with them. In the worst case, it could cause the same effect as spies completing a Recruit Partisans in every neighbourhood in your empire, successfully, for every turn. Forever.
Civilopedia Entry
The traditional police state that arose in various countries during the 18th and 19th centuries was a mixture of autocratic reforms, paternalistic benevolence and compulsion … not necessarily repressive, with its emphasis on national security and progress. But the modern police state arose in the 20th Century and presupposes an authoritarian regime, which in turn grants sweeping powers to its law enforcement agencies. Inhabitants of the latter face restrictions on their freedom to move about, express political or social views, and high levels of surveillance (the primary purpose of the “secret police”).