&gt; Like all laws, laws which give unions monopoly protections are enforced by threats of violence<p>To the extent that&#x27;s true, its less true (or entirely, flatly untrue, depending on the relation of the government issuing the rule to the one employing the workers) in the case of laws giving them such monopolies in public employment, which in fact <i>withdraw</i> the capacity of the government employer to apply violence or its threat in certain ways, like all laws restraining government.