@boomerang,
Thanks for the link, I hadn't run across that before.
I was familiar with the Anslinger-Hearst campaign against Mexicans and Blacks back in the late 1930s that generated the oh so funny (now) Refer Madness movie and propaganda campaign which eventually resulted in the 1930s 'Marijuana Stamp Act' requiring that you have this tax stamp in order to legally possess it. They never printed any :-)
At that time, Government lawyers couldn't come up with a Constitutionally legal way to outright ban marijuana. How Nixon magically accomplished that with the Controlled Substances act is still a legal mystery.
As you point out, both these were personal hate campaigns by those in and near government.
The ONLY reason things are changing is because of the magic 51% of Americans finally waking up to this insanity.