All political systems have brute physical resistance at their base
if a union can't strike, it can't bargain.

And it's no more extortion than an employer threatening to deprive you of your livelihood if you don't tow the company line in every way.
( Flapjack I spay a little mare for you, Fri 12 Jun 2009, 12:26, archived)

actually, I disagree.
I think it's far more extortion. You can always leave your job. Your employer can't fire you under the same situation.
( the mighty badger Aphrodite, on a bar stool, by your side, Fri 12 Jun 2009, 12:39, archived)