They will cause a lot of death and damage.

If they cause a lot of death and damage, they had basically won.

That's the WHOLE purpose of any given Communist Revolution.

Irrevocable damage.

I insisted that the only way you win is when you DO NOT let them do any sort of extensive damage beyond anyone's control in the first place. Once the killing fields/fun camps start rolling out or the machete-wielding killers start looking for prey, it's too late.