A man smokes a joint during the Global Marijuana March in Rome to ask for the legalization of marijuana on Saturday, May 10, 2014. Thousands of people marched downtown in Rome during the Global Marijuana March, an annual rally held at different locations across the planet, demanding the legalization of marijuana and changes in drug policies. The Global Marijuana March (GMM) also goes by the name of the Worldwide Marijuana March (WMM) or Million Marijuana March (MMM).
Credit: Pacific Press
Chris Alford, 30, of Austin, Texas sports a marijuana themed smoking jacket during the High Times Cannabis Cup at the Denver Mart in Denver, Colorado on April 18, 2015. The High Times Cannabis Cup runs through Monday at the Denver Mart.
Credit: Seth McConnell
Micah Sherman, 32, and Nicole Graf, 28, who moved from Brooklyn NY to cultivate cannabis, care for the 'mother plants' which will seed their 7000 sq feet indoor farm in a warehouse south of Seattle, on March 15, 2014 in Olympia, Washington. Sherman and Graf left good jobs in Brooklyn and invested $600.000 in Raven, which will market high-end cannabis products to aging baby boomers. With legal medical cannabis allowed in over 20 states, and recreational use allowed in two (Colorado and Washington), the legal cannabis market is primed to expand dramatically. Privateer Holdings, a private equity firm that invests only in legal medical and recreational cannabis markets, has already raised over 50 millions dollars from investors, effectively bringing cannabis to Wall Street (Photo by Gilles Mingasson/Getty Images).
Credit: Gilles Mingasson
A man smokes marijuana cigars in a pineapple during a march for its decriminalization in Medellin, Antioquia department, Colombia on May 4, 2013, in the framework of the Marijuana World Day. AFP PHOTO/Raul ARBOLEDA
Credit: RAUL ARBOLEDA
Glenn Lewis rolls a joint to smoke at his Manchester home Tuesday, October 9, 2012, while recovering from surgery. Lewis, and his wife Catherine were involved in a severe auto accident many years ago and are still suffering with chronic pain. They use medical marijuana to treat themselves.
Credit: Portland Press Herald
Fast Eddy Aki'a of Hawaii smokes a joint as thousands gathered to celebrate the state's medicinal marijuana laws and collectively light up at 4:20 p.m. in Civic Center Park April 20, 2012 in Denver, Colorado. Colorado goes to the polls November 6 to vote on a controversial ballot initiative that would permit possession of up to an ounce of marijuana for those 21 and older.
Credit: Marc Piscotty
A medical marijuana advocate who goes by the name The Holy Hemptress holds a sign as she demonstrates outside of the W Hotel where U.S. President Barack Obama was holding a fundraiser on October 25, 2011 in San Francisco, California. Hundreds of protestors from a wide variety of activist groups staged protests outside of the W Hotel where President Obama was holding a $7,500 per person fundraiser.