Arthur Goldstein has taught in a New York City high school for almost four decades. He has been an active member of the United Federation of Teachers, the city’s powerful teachers’ union. Arthur also is a blogger and a journalist. His blog “nyceducator.com” is usually witty and often hilarious.

Recently Arthur posted a parody of a letter from UFT President Michael Mulgrew to UFT members. Arthur used the parody to complain about the deal made between the municipal unions and the city to shift their retirees from Medicare to a Medicare Advantage plan. Mulgrew was a leading advocate for this deal. The agreement saves the city $600 million a year, but forces retirees to give up Medicare for a for-profit MA plan that may deny permission for services and that may not cover the doctor of one’s choice.

Parody is no crime, but Arthur soon got a letter from the law firm that represents the UFT, threatening him with legal action.

Of course, Arthur posted the original parody and the lawyer’s letter.

Something tells me he will not back down. As he says, parody is protected by the First Amendment.

But there is something very scary when a powerful person with deep pockets threatens to sue you. Back in 2014, I received a letter from the representative for a billionaire with a lawsuit threat for something I wrote about him on this blog. It’s a bad feeling.

When a working teacher is threatened in this manner by the president of his union, it is especially bad.