Thousands of SF marijuana convictions to go up in smoke, DA applying new pot legalization laws all the way back to 1975

San Francisco plans to retroactively apply California"s new marijuana legalization laws to thousands of pre-existing pot related convictions, the SF district attorney"s office announced Wednesday. Thousands of misdemeanors and felonies dating to 1975 will either be expunged or reduced, and the lives of people convicted of those crimes will be changed for the better.