November 20, 2018 8:42 am Legal Recreational Marijuana Sales Start in Mass. Massachusetts became the first state east of the Mississippi River to allow legal recreational marijuana sales on Tuesday. US & World Videos 1:23 Canton firefighter testifies in Karen Read murder trial 2:30 Protests continue at Tufts University 2:19 Here's how to stay up to date on the Karen Read trial 0:45 Karen Read trial Day 3: Witness testimony resumes 1:56 Campus unrest continues at Boston schools