"they hire their own private armies a la Pinkerton, because who'll stop them?"
There was a time when American workers had balls, and they shot and killed Pinkertons. When people are beyond the reach of the law they may still not be out of range...
Our country and it's freedoms were born of righeous Revolutionary violence, the eager willingness to send bayonet and musket ball crashing into the bodies of British soldiers and their Hessian mercs.
If the Founders had been pacifists they wouldn't have Founded anything.
Things aren't bad enough for violence so long as we are kept comfortable and fed by our Masters. Woe betide them if they forget that people don't revolt over freedom, they revolt over food and shelter.