Matt Galanti, 17, of Bothell, Wash., smokes marijuana from a glass bong at the opening day of the pro-marijuana rally Seattle Hempfest, Aug. 17, 2012, as friends Zach Casselman, 18, of Bothell, and Clay Graeber, 20, of Bothell, look on. Organizers expected more than 150,000 people to attend the three-day event, which comes as citizens in Washington state prepare to vote on an initiative that would legalize and tax the sale of up to an ounce of cannabis at state-licensed stores. (AP Photo/Gene Johnson)

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