[Polonius]

By the way, regarding the correlation between certain drugs and crime, I'd bet that only a few of them (perhaps cocaine, heroin and PCP, just to throw out a few guesses) could be shown to have an equal or higher correlation than alcohol. If so (yes, I know I'm in the land of hypotheticals here), how should those substances that don't show a relatively strong connection with other crimes be treated?

[FreeTally]

By the way, regarding the correlation between certain drugs and crime, I'd bet that only a few of them (perhaps cocaine, heroin and PCP, just to throw out a few guesses) could be shown to have an equal or higher correlation than alcohol

Actually, when you sift through all the propaganda, PCP is the only "drug" shown to actually "cause" crime. The nature of the drug, in any amount, is to literally put you out of your mind. PCP literally fries your brain - this is fact. You feel little pain, do things "super-human" and then dont remember it too well. The drug is practiacally non-existent today because of this. Almost any person in law enforcement, who has had experience with PCP, will tell you there is no market for it, not because of drug laws, but because it is slightly safer than drinking gasoline. See, the free market works wonders!