Since entering office this year, the Trump administration has encouraged people multiple times to send in tips about people who are not aligned with its agenda or ideology on a number of issues. Historians and experts on authoritarianism have a word for this: denunciation – the practice of citizens monitoring each other and reporting perceived wrongdoing to the state. Many Americans have expressed resistance to the idea of becoming a government informant, but it’s another sign of how the country may be slipping into authoritarianism.

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