A man poses for a photo during a demonstration to celebrate 4/20, the informal cannabis holiday in Hyde Park, London, on April 20, 2022. TOM NICHOLSON, REUTERS A person smokes as marijuana enthusiasts take part in the informal annual cannabis holiday, 4/20, corresponding to the numerical figure widely recognized within the cannabis subculture as a symbol for all things related to marijuana, in Mexico City, Mexico, April 20, 2023. QUETZALLI NICTE-HA, REUTERS People dressed in costumes depicting cannabis leaves gather with marijuana activists to mark the annual world cannabis day and to protest for legalization of marijuana, in front of the Brandenburg Gate, in Berlin, Germany, April 20, 2022. LISI NIESNER, REUTERS A cloud of smoke rises over people smoking while rapper Lil Jon performs during the Mile High 420 Festival in Denver, Colo., on April 20, 2022, known by some as ‘Weed Day’. Tens of thousands of cannabis enthusiasts gathered in Denver on April 20 to celebrate the ever-widening US legalization of recreational weed with plumes of pungent smoke, music… and a few grumblings about commercialization. April 20 has become the national holiday for the herb in the United States, as the date corresponds with the “420” slang name for marijuana. PATRICK T. FALLON, AFP Via Getty Images An activist hands out free marijuana cigarettes to people after they show proof of a Covid-19 vaccination at Union Square on April 20, 2021 in New York City. The event, which attracted hundreds, was held in honor of “4/20” and the efforts to get more New Yorkers vaccinated. Called “Joints For Jabs,” the afternoon event was organized by marijuana advocates and longtime AIDS activist group ACT UP NY. New York City had recently made the smoking of marijuana legal. Spencer Platt, Getty Images A person takes part in the informal annual cannabis holiday, 4/20, corresponding to the numerical figure widely recognized within the cannabis subculture as a symbol for all things related to marijuana, in Mexico City, Mexico, April 20, 2023. QUETZALLI NICTE-HA, REUTERS A man holds an oversized joint during the Mile High 420 Festival in Denver, Colo. on April 20, 2022. PATRICK T. FALLON, AFP Via Getty Images On the first 4/20, the unofficial holiday for marijuana enthusiasts, since marijuana was legalized in New Jersey, people gather at the state house in Trenton on Tuesday April 20, 2021 to celebrate as well as protest NJ laws that prohibit people from growing marijuana at home. Anne-Marie Caruso, USA TODAY NETWORK A man holding an inflatable joint poses for a picture during a demonstration to mark the informal cannabis holiday in Hyde Park, London, Britain, April 20, 2022. TOM NICHOLSON, REUTERS Cookies shaped like marijuana leaves are pictured at the Cannabis Carnivalus 4/20 event in Seattle, Wash. April 20, 2014. Thousands of marijuana enthusiasts gathered in Colorado and Washington state over the weekend for an annual celebration of cannabis culture with rallies, concerts and trade shows in the first two states to legalize recreational marijuana. JASON REDMOND, REUTERS Fancy Fairchild, right, waves a flag during a rally to legalize marijuana at the Governor’s Mansion on Wednesday April 20, 2022. A few dozen activists gathered at 4:20 p.m. on 4/20 to bring attention to cause. Jay Janner, Austin American-Statesman Via USA TODAY NETWORK A man wearing a Grinch costume pretending to smoke a joint takes part in the International Marijuana Day celebration at Paseo de la Reforma avenue in Mexico City on April 20, 2023. PEDRO PARDO, AFP Via Getty Images People roll a blunt during the informal annual cannabis holiday in Denver on April 20, 2023. KEVIN MOHATT, REUTERS A man smokes marijuana in a papaya during a 4/20 rally to commemorate the World Cannabis Day in Bogota on April 20, 2022. RAUL ARBOLEDA, AFP Via Getty Images Regina Dotson shows off her marijuana-themed earrings, necklace and sunglasses at the Magnolia cannabis lounge in Oakland, Calif. on April 20, 2018 during the first ‘4/20’ since the sale of recreational marijuana became legal in the state. ELIJAH NOUVELAGE, REUTERS Smoke rises during the annual 4/20 marijuana rally on Parliament Hill in Ottawa, Canada on April 20, 2018. CHRIS WATTIE, REUTERS A woman smokes during a demonstration to mark the informal cannabis holiday in Hyde Park, London, April 20, 2022. TOM NICHOLSON, REUTERS A woman participates in a gathering along with marijuana activists to mark the annual world cannabis day and to protest for legalization of marijuana, in front of the Brandenburg Gate, in Berlin, Germany, April 20, 2022. LISI NIESNER, REUTERS A Marijuana enthusiast takes part in the informal annual cannabis holiday, 4/20, in Mexico City, Mexico on April 20, 2023. QUETZALLI NICTE-HA, REUTERS