[Chris2048]

I don't really trust the selective quoting of that blog, e.g:

quote: “Some anti-Semitism is justified”

full quote: “Should you be allowed to make an anti-Semitic remark? Yes, because some anti-Semitism is justified. Just like some anti-Irish feeling is justified. If you can’t be criticized, that’s very dangerous. You lose the concept of a free society.”

They pounced on the unfortunate and/or unusual use of the word "justified", where the full context makes it clear he's talking about what you should be allowed to say, not what is correct. He means its existence in public discourse is "justified".