https://www.siliconvalley.com/2024/01/03/colorado-marijuana-10-years-history-legalization-industry-struggles/

The world’s first legal sale of recreational marijuana happened in Denver on Jan. 1, 2014. In fact, it happened twice.

Mason Tvert was managing the onslaught of media that descended on the Mile High City to witness the historic moment, set in motion by the successful legalization campaign he’d led. So many camera crews and reporters showed up that morning that Tvert decided to rotate two groups through the dispensary’s sales floor — with each transaction billed as the first time anyone 21 or older could legally buy weed simply by walking into a store, showing ID and paying for it, no doctor’s note necessary.