Los Angeles (AFP) – Tens of thousands of Americans will gather in parks and city plazas under a fog of marijuana smoke on Wednesday to celebrate a drug that remains illegal in much of the country. April 20th has become synonymous with pot, a day when THC-infused clouds drift, people play bongos, and everyone feels a bit of love for each other. But why did 4/20 become so important? What is 4/20? Basically a day that celebrates all things Mary Jane. In more than a dozen US states where weed is legal, big rallies will take place in public spaces, with participants lighting up everything from regu…