What if Blackwater and Co. were used as a force supporting a liberal overthrow of undemocratic government?  What about the French, Russian and American revolutions?

Do you support the violent overthrow of the US government?

Uh,,  no. Gringo, you will never get a government job if you have to think about the answer to that question.

Here's the thing.

What makes the state?

I would say the fundamental definition of the state is the social contract, the basic law that defines relations in society and binds all alike regardless of wealth or power.  So long as that exists, the use of lethal force must be subject to that basic law.  

To do anything else is to revert to an animal state, and invite a war of all upon all.  Laws don't exist for the 99& of humanity that can operate in their absence, they exist for the poisonous 1% that have to be extracted from society, before they sow disorder and disregard for the rights of others.

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg