Massachusetts' high court dismissed 21,587 drug cases Tuesday, after it was discovered that former Mass. chemist Annie Dookhan falsified and tampered with lab evidence that was used many times as evidence in court, per Buzzfeed. The suit was brought forth by the state's ACLU chapter and the dismissal ended a five-year legal battle.
Why it matters: The verdict is believed to be the single largest dismissal of wrongful convictions in U.S. history.
Between the lines: Although the dismissal is being considered a win for those wrongfully convicted, it still took five years for the court to dismiss them. Meanwhile, Dookhan — who plead guilty in Nov. 2013 and was sentenced to three to five years in prison plus two years' probation — was released on parole in 2016.