This is completely anecdotal, but contemporary accounts of the Haight Ashbury following the Summer of Love tell the story of a movement that started out on acid

This is completely anecdotal, but contemporary accounts of the Haight Ashbury following the Summer of Love tell the story of a movement that started out on acid, moved on to speed, and became far more violent and filled with squalor because of it. Much like what is happening today. “[1] Even among drug-using Haight-Ashbury subcultures, the high-dose methamphetamine abuser was marginalized, but became increasingly visible and unavoidable because of violence associated with dealing methamphetamine and because of the users' hyperactivity and paranoia.” 1.https://www.tandfonline.com/doi/abs/10.1080/02791072.2011.587714 https://www.tandfonline.com/doi/abs/10.1080/02791072.2011.58...