rick doblin, self proclaimed hippie turned advocate, researcher and fundraiser began his mission. >> it became apparent to me that the only way back into legal use of mdma would be through the fda to medicalize mdma through scientific research. >> launching maps into a 30 year struggle with federal regulators, thats resulted in small, but privately funded mdma studies across the world. coming up on techknow. >> it's kind of an orangish color. so it's possibly either methamphetamine or amphetamine. >> it's friday night in hollywood... the dance clubs along hollywood boulevard are starting to fill up with partiers. "molly" is part of the scene. a team of volunteers from a non profit called "dance safe" has hit the streets too. as members of the harm reduction movement, they are on a mission that they think is very important. >> so you use this term "harm reduction", what does that really mean? >> well, "harm reduction" is acknowledging the fact that despite zero-tolerance drug policies, people are still going to use drugs... so the end goal is to keep people safe, alive and really prev

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