Sullivan, according to Kennedy's column, "is the director of the Criminal Justice Institute at Harvard Law School and the architect of a conviction-review program in Brooklyn that has freed a score of improperly convicted individuals." These are pretty good bonafides, from a progressive point of view. Read Kennedy's column to get the full story of the recent events. The essence is this: Sullivan, who had served for many years, with his wife, as a faculty dean at a Harvard dormitory, joined the team of lawyers defending Harvey Weinstein, who has been charged with outrageous (and criminal) behavior related to Weinstein's alleged depredations against women, mostly women over whom he wielded very significant economic power.
Most people believe that Weinstein is guilty as charged (and he probably is). The majority of Harvard students seem to have this opinion, and it appears that they are impatient with anyone who would suggest that Weinstein should get an actual trial. John Adams, and his experience defending the British solidiers after the Boston Massacre, shows a different way to approach how "justice" is achieved. You can read about it here, or here.
Let me associate myself with John Adams. From what I know of the events at Harvard, I think Kennedy's column is right on target.