Believe it or not, my county's sheriff was quoted about a year ago in a local morning paper that the "suspect" in question was all "hopped up on Marijuana". I blew coffee out my nose in laughter when I read that one. Not a fan of legalization, but I wonder how much of the mania around MJ is perpetuated by certain dupes in law enforcement.
On the other hand there are lot of those on the internet who are attempting to refute recent studies on the negative impacts of marijuana by siting studies done in 1971.