A cynical person may think that that the modern war on drugs is intended to increase profits for the CIA for things that they couldn't ask the tax payers for.
An extra cynical person may think that the CIA has found a new and much cleaner way of raising money via the tech startup industry.
But you'd have to be pretty cynical to believe that.
Guess which country has rules to bend to the war on terror?
https://en.wikipedia.org/wiki/Opium_Wars
https://en.wikipedia.org/wiki/Cannabis_in_Egypt#Ottoman_peri...
https://en.wikipedia.org/wiki/Cannabis_in_Singapore
https://en.wikipedia.org/wiki/International_Opium_Convention
There are also references of the ban in Turkey and Greece in 1890 everywhere but without good sources.
The above should be enough to realize that that different nations made various drugs illegal without the US influence and without intention to oppress black panthers and communists.
I completely believe that to control the world, you must control people's minds, and to control people's minds, you must control drugs.
All you need is a compliant media and lots of Money to be made to corrupt enough legislators....