Plenty of US Citizens starting with G Washington and T Jefferson have used cannabis and did NOT become CRIMINALS!
Apparently cannabis will not make you a criminal! The LAW WILL!
"I am very glad to hear that the Gardener has saved so much of the St. foin seed, and that of the India Hemp. Make the most you can of both, by sowing them again in drills. . . Let the ground be well prepared, and the Seed (St. foin) be sown in April. The Hemp may be sown any where. " George Washington to William Pearce, 24 February 1794
I bet you'd like nothing better than to kick in good old George's door, and throw a few grenades in his window!
Drug Nazi!
Worst of all the pop propaganda is the constant obfuscation that hemp and marijuana are the same thing. They are not.
Ad hominem attacks can take the form of overtly attacking somebody, or more subtly casting doubt on their character or personal attributes as a way to discredit their argument. The result of an ad hom attack can be to undermine someone's case without actually having to engage with it.
Example: After Sally presents an eloquent and compelling case for a more equitable taxation system, Sam asks the audience whether we should believe anything from a woman who isn't married, was once arrested, and smells a bit weird.