Where will they stop? They won't stop. They have no reason to stop because their agenda is never complete. The idea of "enough" is alien to their world view. Liberals will continue to push until they, like a cancer, either are stopped by outside intervention or kill their host and die themselves as a result. And that's why it is right and proper to call their politics "progressive."
Well put. I'm adding that to my profile page list of pertinent quotes; you're in good company.