Jacob Sullum responds to Ross Douthat's op/ed arguing against cannabis legalization. I have a hard time imagining any reading of Douthat's argument that wouldn't apply more forcefully as a case for prohibiting the sale of alcohol than it does for cannabis, but few would be persuaded to try that again.

Pot legalization is a 'big mistake' only if you ignore the value of freedom and the injustice of prohibition
The harm caused by marijuana abuse does not justify reverting to an oppressive policy that criminalized peaceful conduct.
reason.com
