We should support freedom of speech, even when it’s offensive to some or most. I don’t see anything threatening in what he said.
It’s not threatening, it’s just wrong.
The ADL has freedom of speech too. But it’s a fact that the Gospels make the Jews look a lot worse than the Romans in the events surrounding Jesus’ death. I’ve always found it implausible myself.
The Bible says what it says, about what happened at the time of the Crucifixion. The ADL, here, is seeking to create a phoney issue that will divide Christians & Jews. There is no way that this blatant sensationalism of a passing tweet will serve any other purpose. This is simply the way Fabian Socialist organizations operate, to undermine tranquility and social cohesion to ulterior purpose--and, of course, it is how the ADL raises money to serve that ulterior purpose.
For a closer look at the three organizations, and their tactics, How To Recognize The Bigot In The Argument.