I read an eye-opening account on how the hippie era drug epidemic began. In brief, as the protests against the Vietnam War began to spread, there appeared a certain
"Mr. Augustus Owsley Stanley III, aka. The Bear. At the so-called “Human Be-In” staged in January of 1967, Owsley had kindly distributed 10,000 tabs of potent LSD. For the Monterey Pop Festival just five months later, he had cooked up and distributed 14,000 tabs. For Altamont, he did likewise. That's acid with a street value of $20,000-$30,000 (a considerable amount of money in the 1960s) handed out for free to thousands of random strangers.