If you don't want your kid to smoke cigarettes, why not try having an actual, trusting relationship with them-- or depending on their age and maturity, minding your own business-- rather than sending Frankie the inspector thug over to break the knee caps of small business owners?

Or to go all consequentalist on you, your kid is just going to have his over-age buddy buy the cigarettes for him anyway! All that was accomplished was higher taxes.