Why is so much of the funding for anti-marijuana activist organizations coming from pharmaceutical companies? Joining Chris Hayes on All In last night, Lee Fang explained the tangled links between big pharma companies who make opioid prescription drugs and anti-legalization activist groups that he uncovered while reporting his article, “The Real Reason Pot Is Still Illegal.”

According to Fang, the anti-drug activists who focus on pot have their priorities misplaced, as prescription painkiller abuse is an “epidemic” that is sweeping the country. “The CDC says it kills over 16,000 people a year,” Fang told Hayes. —Hannah Harris Green