To most conservatives that would be a very valid response, but I am an anarchist, so I buy your bluff.

Retaliatory force is positive, that's not what I mean when I say coercion - by coercion I mean initiatory force. The minimum wage doesn't correct some transgression of a contract the employer has neglected - it asserts a price floor and outlaws all free association below that price. Therefore, it falls into the latter category.