Gascon said he didn't believe police should have killed the men, but he was bound by law not to press charges.
San Francisco police not charged in black man's 2015 killing →
Gascon in January announced his office would dismiss and seal more than 3,000 misdemeanor marijuana convictions dating back to 1975 after voters approved Proposition 64 legalizing recreational marijuana for adults 21 and older.
Algorithm will help San Francisco DA wipe out pot cases →
