John Hood already has described for us the political nature of the U.S. Justice Department’s lawsuit against North Carolina’s new election law. Now Hans von Spakovsky details for National Review Online readers another case that demonstrates the highly politicized nature of today’s DOJ.

In a shocking case of “grotesque” misconduct by federal prosecutors, a federal judge in Louisiana has ordered a new trial for five New Orleans police officers convicted for a shooting on the Danziger Bridge on September 4, 2005 — in the aftermath of Hurricane Katrina — and for a subsequent cover-up. This is another black eye for the Holder Justice Department that the media have barely covered.

Participating in the misconduct that the judge said had created an “online 21st-century carnival atmosphere” was Karla Dobinski, a lawyer in the Criminal Section of the Civil Rights Division of the Justice Department and the former deputy chief of the section. The reversal of the convictions is what Judge Kurt Engelhardt calls a “bitter pill” for Hurricane Katrina survivors, but his investigation of the matter provides an intensive inside look at the unprofessionalism of some of the lawyers at the Holder Justice Department, and also at the department’s attempts to obscure its misdeeds.

Last December, I reported on what Judge Engelhardt called the “skulduggery” and “perfidy” of DOJ prosecutors in a scathing order issued on November 26, 2012. At the time, the lawyers for the defendants had filed a motion for a new trial. They claimed that the prosecutors had leaked secret grand-jury proceedings and engaged in a public-relations campaign to inflame public opinion and sway the jury through anonymous postings on nola.com, the website run by the Times-Picayune.

It turned out the defendants’ lawyers were correct. In his November order, the judge detailed his findings that two senior prosecutors in the office of the U.S. attorney in New Orleans were responsible for many of the anonymous postings. These writings “mocked the defense, attacked the defendants and their attorneys, were approbatory of the United States Department of Justice, declared the defendants obviously guilty, and discussed the jury’s deliberations.”