Shoppers at Medithrive browse cannabis variants on an electronic display during the store's first day of recreational marijuana sales on Saturday, Jan. 6, 2018, in San Francisco. The announcement that the U.S. Department of Justice would no longer adopt a "hands-off" approach to states that have legalized marijuana use initially sent some in the industry into a tailspin, just days after the $7 billion California recreational weed market opened for business. (AP Photo/Noah Berger)
