Sweet Leaf Marijuana Center at 2609 Walnut St in Denver, displaying a Notice of Suspension from the City of Denver Department of Excise and Licenses in December 2017. The Sweet Leaf dispensary ...

The ads featured the readily recognizable leaf and asked the website’s users to “sign the petition to President Obama to support states’ rights to legalize marijuana.” “We’re not ...

A green, upside-down triangle with a cannabis leaf in the center will become Michigan's universal warning sign that a medical marijuana product contains the psychoactive ingredient THC.

A demonstrator waves a flag with marijuana leaves depicted on it during a protest calling for the legalization of marijuana outside of the White House in April 2016 in Washington. (AP Photo ...