The far left doesn't like insensivity to Jews? Which far left are you thinking of? In the US, the far left is the most reliable source of public anti-Semitism. (Note specifically that I said public. I'm not going to try and divine whether rightwing anti-Semitism is worse in private, which it very well may be.)
Your second link is interesting, thank you. Caputo in particular is a good example of anti-semitism among rightwing public figures. It doesn't dispute my impression that anti-Semitism (and other racism) on the left is much more acceptable in public statements than rightwing public anti-Semitism; it just claims that the media disproportionately focuses on leftwing anti-Semitism (possibly true).
I don't think complaining about Internet votes is particularly constructive, but this is more of an insight than a complaint: the downvotes on my original comment are a perfect reflection of how inanely most people engage with topics like these. There are "good guys" and "bad guys", and the "good guys" don't do any of the bad things. I don't use the phrase anti-Semitism reflexively, and think it's often wielded as a bludgeon, particularly in the context of criticism of the Israeli government. But the idea that one would be surprised at anti-semitism on the far left, like the comment I responded to, is ridiculous.