Of course if the revolution is unsuccessful, it will almost certainly trigger a Crackdown or Purge. Crackdown - Crime will not be tolerated. Disobedience will not be tolerated. Civil unrest will not be tolerated. Political opposition will not be tolerated.
Dissidents can expect to be rounded up and imprisoned.
A curfew will be strictly imposed. Ongoing Draconian laws and oppression may eventually lead to Civil Unrest and even Revolution - if anyone's brave or stupid enough to open their mouth. Purge - Dissidents, real or imagined, disappear in the middle of the night. Prominent popular figures who represent a threat to the ruling bodies wind up dead. Anybody found talking ill of the government is likely to wind up on the rack having a confession forced out of them before being publicly executed.