Leary didn't say, "Due to regressive laws in the U.S., which I respect but we need to change, I cannot pursue my double-blind clinical trials of LSD-25 for treatment of depression in America. I have therefore moved my research to Mexico." Leary was infamous for popularizing LSD, and was part of the problem for authority's long road to accept it. I know sometimes civil disobedience is in order, but we are not talking about sarsaparilla root here.
He said (paraphrased), "People over 40 want to put me behind bars for helping people discover the cosmic candles of the night sky on the Mexican beaches...the fair-haired elven princess in the tree house...the verdant fields... Why are the mean rational adults picking on me?" which are outside of the generally accepted principles for the treatment of mental illness, I would think. It's way beyond therapeutic use and into snake oil territory when advertised as an aphrodisiac and spiritual guide. Yoga and Buddhist meditation also have therapeutic benefits and very safe--why not use those until (and after) the clinical trials of LSD are completed?
Nor you! I was just returning to thank you for posting your original idea to listen to this--I was only clarifying my thoughts before--Leary was human like any of us and I think a progressive, truth-seeking one. It is good to make up our own minds about history with direct sources like this. So, thanks for that and these new comments, which do make sense too.