John Halpern was a DEA informant. We didn't forget about you Johnny boy.

Rick Doblin Supported Him: https://erowid.org/culture/characters/halpern_john/halpern_john_article1.shtml
Neal Marshall Goldsmith supported him: https://erowid.org/culture/characters/halpern_john/halpern_john_info1.shtml
Dosenation thread with Jon Hanna, Andrew Sewell, Rick Doblin, and what may be John Halpern (potentially pretending to be a bunch of accounts defending himself): http://www.dosenation.com/listing.php?id=7955

See also: https://flipboard.com/@lorenzohagerty/psychedelic-salon-beqt65mhz/we-need-to-talk-about-maps-supporting-the-police-the-military-and-violent-whit/a-k6S5z__XQ8Si-nA5xB74_w%3Aa%3A48067471-3a90442e76%2Fpsymposia.com

Mark McCloud (artist, ex-art professor, and avid collector of LSD blotter art) calls out John Halpern for working as a DEA informant at the 2006 LSD symposium in Basel, Switzerland. Rick Doblin and John Halpern offer some (profoundly unsatisfying) words in reply.