<p>In this April 20 photo, members of a crowd numbering tens of thousands smoke marijuana and listen to live music, at the Denver 420 pro-marijuana rally at Civic Center Park in Denver.</p>
September 5, 2013
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September 5, 2013 9 p.m.
Keeping their crayons
Medical marijuana businesses look to 'color inside lines'
HELENA, Mont. - Medical marijuana businesses worried that federal agents will close them down now have a roadmap to avoid prosecution, courtesy of the Justice Department's decision to allow legal pot in Colorado and Washington state.