Earlier this year, Baltimore cops murdered Freddie Gray by chaining him up and intentionally swerving and repeatedly slamming on the brakes. Rather than telling their members to behave professionally, however, the head of the city's police union attacked people who protested Gray's death, smearing them as — of all things! — "a lynch mob."

About a year ago, the leader of New York's police union reacted to the assassination of two Brooklyn cops as they sat in their squad car by declaring that newly elected Mayor Bill de Blasio had "blood on his hands" — because he hadn't been sufficiently pro-cop. (There is no evidence that the killer had ever heard of Bill de Blasio.)

Now the Fraternal Order of Police is threatening one of the United States' most acclaimed film directors.