Brooklyn D.A. Charles Hynes' alleged kid gloves treatment of haredi criminals was questioned at least as far back as 1994, when America's leading newspaper criticized Hynes for going way too easy on haredi criminals.
That paper? The New York Times.
Writing in The Jewish Week, Hella Winston details some of the Times' complaints in 1994 about Hynes:
…[A] 1994 editorial in the Times — written when Hynes had been in office for only five years — asserted that “The delicate balance between being a politician and being a prosecutor has been most evident in District Attorney Charles J. Hynes’ dealings with Brooklyn’s Orthodox Jewish population” and took the DA to task on a number of counts.
Specifically, the paper noted that Hynes’ then adviser on Jewish affairs, deputy district attorney Charles Posner, was in violation of ethical guidelines barring any ADA from serving as an official of a political committee, club or organization; in addition to his position as an ADA, Posner also served as the president of the Council of Jewish Organizations of Flatbush.
The editorial also mentioned a 1994 case involving the kidnapping of a teenager by Rabbi Shlomo Helbrans. There, Hynes’ office initially sought to drop the case and then, after the FBI and federal prosecutors got involved, entered into a plea agreement that would have imposed only probation and community service. The plea was later overturned by a State Supreme Court judge, and Helbrans ended up spending two years in prison.…
Winston also reports extensive criticism of Hynes from legal experts, a former employee, and activists.
And she also reports this:
…Other examples of Hynes’ apparent special treatment of Orthodox crime suspects abound. In a July 1998 column for Newsday (now archived on the NYPD Confidential blog) Leonard Levitt reported that the mother of 29-year-old Crown Heights resident Simon Jacobson, who was accused of bilking an elderly tenant out of her life savings, reached out to communtity liason Henna White. The case was assigned to the Rackets Bureau, and White’s husband ended up representing Jacobson. According to Levitt, despite being given apparently ample documentation of Jacobson’s dealings, the district attorney dismissed the case for lack of evidence.…
Winston's piece is much longer than what I've posted here, and it contains many more allegations and attacks on Hynes.