Civil Unrest

noun a system of rules that is enforced by the military rather than by the usual civil authorities

• The government declared martial law in response to the escalating civil unrest.
• I heard they're imposing martial law in the city to control the protests.
• They're gonna bring out the big guns and enforce martial law if things get out of hand.
• Her strict rules at home felt like living under martial law.

noun the action of withdrawing formally from membership of a federation or body, especially a political state

• The secession of the Southern states from the Union led to the American Civil War.
• The secession of that group from the club caused quite a stir.
• The secession of the band member was a real bummer.
• The secession of the company's top talent will have a huge impact on their success.