sedition (n.)

• action
• agitation
• alienation
• collaboration
• coup
• disaffection
• estrangement
• extremism
• fomentation
• fraternization
• instigation
• insurgence
• insurgency
• insurrection
• insurrectionism
• mutiny
• protest
• putsch
• quislingism
• rebellion
• rebelliousness
• revolt
• revolution
• strike
• subversiveness
• traitorousness
• treachery
• treason
• uprising