US | 4/20 Happy 4/20: Snapchat Takes Flak Over Bob Marley Filter And other marijuana-related headlines By Newser Editors Posted Apr 20, 2016 11:13 AM CDT Copied It's 'national weed day.' (AP Photo/Ted S. Warren, File) It is 4/20, as pot smokers everywhere—or the people who sell to them—are surely aware. Some related stories: Snapchat marked the day with a special Bob Marley filter for your selfies. The problem is that a loud chorus on social media is complaining that it amounts to "digital blackfacing." See Mashable. So why the association between 4/20 and pot? It's the time of the afternoon that a group of 1970s high school stoners would meet to partake, and the Grateful Dead played a role in popularizing it, explains a post at Digg. It has links to stories debunking other explanations. Vox rounds up other need-to-know factoids about "national weed day." Marketwatch takes a deeper look at how the day has gone mainstream. Think money. Indeed, a lot of of pot is being sold on 4/20, perhaps in record-setting amounts, reports Money. It's going to be a very big day in San Francisco, as KTVU explains. Canada might soon join the legalization club, reports the Huffington Post. USA Today offers a list of specially themed movies to watch. Read These Next The Bezos-Sanchez wedding: guest list, cost, the dress, and more. Trumps ends trade talks with Canada. This is why your cat loves sleeping on its left side. Cops nab 9th fugitive in New Orleans, with 'one more to go.' Report an error