To me, a kinderprison is any school- government or "private"- based on the Prussian system of behavior
Abolish the kinderprisons!
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Those who want you to doubt that anarchy (self-ownership and individual responsibility) is the best, most moral, and ethical way to live among others are asking you to accept that theft, aggression, superstition, and slavery are perhaps better.
Statist: "What's the 2nd letter of the alphabet?
Libertarian: "B"
Statist: "Well, then, what letter comes after 'A'?"
Libertarian: "B"
Statist: "OK, but what letter comes before 'C'?"
Libertarian: "B"
Statist: "Why do you keep going in circles?"
Libertarian: "Sigh..."