Ok Frater, let's ignore the long history of US born serial killers and general nutcases
DISCLAIMER - If you're a citizen of the U.S.A. and feel insulted by the previous half-sentence, go back and read it again. If you've read it (no less than 10 times) and you still feel insulted, fret not. There's a number you can call. I just don't have it on me at the moment.) and assume for a second that all that happened on that one example you provided had to do only with the mushrooms he ingested. Let's imagine he's just a normal everyday kinda guy (and by looking at his photo, it's pretty clear he isn't) that had a bad trip and did what he did. My argument against that is that for every guy like him that does what he did, there's a hundred other guys that drink instead of doing shrooms that either get home and beat their wives or kids, that get in car and kill someone drunk driving (or themselves), that drive their friends and family to near insanity (I dunno if you've ever had to deal with a booze addict, from what I know it's quite taxing, to say the least) with their madcap antics and general obnoxiousness.
To put it plain and simple, add all the drugs and all the addicts (and no, I'm not privvy to this specific info, I'm just throwing numbers out there) and you'd end up with something like huh, 10-15% of the general population (and that's stretching it a bit methinks). You surely have a lot more people consuming alcohol than that don't you?
I have to say, as a smoker, I'm quite surprised and also somewhat insulted no one's started picking on us yet. (WAIT FOR IT......)
SURGEON GENERAL'S WARNING - I apologise for the previous disclaimer. The person responsible has been sacked. Oh and don't smoke. Smoking's bad.
@Retlaw - I'm not saying that everyone who drinks is an addict nor am I saying that everytime you drink you're killing the planet or somesuch. Simply stating that the plain availability and low price of alcohol (not to mention the fact that people usually regard it as "entertainment" and then fret on hard drugs) makes it a prime intoxicant when compared to other types of drugs.
Don't get me wrong, I drink myself (though hardly ever to the point of inebriation) and I'm not looking to sound patronizing and claim that "people can't hold their drinks, alcohol should be banned" or anything like that. Simply pointing out the inconsistent treatment society gives to some substances when the whole lot of them is potentially dangerous, not to mention lethal.
I'm not arguing definitions here, I'm arguing the effects substances might have on people, whether the user itself or his or her relatives/friends/others and whether clinically sick or not.