That a self-described libertarian can object to the above Cato ad speaks volumes about the relative ineffectiveness of the libertarian movement.
As geoanarchist Fred Foldvary points out, a market is only truly “free” if it is free from both private and government aggression. That ideal is impossible, and so the question for us grownups is: how close can we approach the ideal? The question for children remains: how can I get people to notice how ideal my daydreams are?
Melinda, please read http://libertarianmajority.net/does-abstaining-from-aggression-minimize-it