FEMA camps conspiracy theory

The FEMA camps conspiracy theory is a belief, particularly within the American Patriot movement, that the United States Federal Emergency Management Agency (FEMA) is planning to imprison United States citizens in concentration camps, following the imposition of martial law in the United States after a major disaster or crisis. In some versions of the theory, only suspected dissidents will be imprisoned.

Source: Wikipedia — FEMA camps conspiracy theory (CC BY-SA 4.0)