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# Mark McCloud Calls Out DEA Snitch & MAPS Researcher John Halpern
- URL: https://www.psymposia.com/john-halpern-halperngate/
- Published: 2006-01-14T02:31:59.000Z
- Updated: 2020-11-12T08:57:55.000Z
- Description: Mark McCloud calls out John Halpern at the International Symposium on the Occassion of the 100th Birthday of Albert Hofmann. January 13, 2006. Convention Center Basel, Switzerland
- Author: Psymposia
- Tags: Videos, Culture, Psychedelics

[![](https://i.ytimg.com/vi/Zs0eQDHkjyQ/hqdefault.jpg)](https://www.youtube.com/watch?v=Zs0eQDHkjyQ&ref=psymposia.com)