Drug decriminalization didn't cause this (Ethan Nadelmann critiques Michael Shellenberger)

But it CAN help solve problems related to addiction and urban homelessness, says Ethan Nadelmann. The founder of the Drug Policy Alliance responds to "San Fransicko" author Michael Shellenberger.

Watch the full replay of Nadelmann's live discussion with Nick Gillespie and Zach Weissmueller: youtube.com/watch?v=i3RyKDH-4Hk