I never said they did.

You very heavily implied it, though.

But they demonstrate that we can’t just assume that people aren’t antisemitic just because they are left(-leaning)

Sure. Just like we can’t assume that people from Nepal don’t pollute. It’s not the norm or even something of heightened risk compared to other demographics.

Unless of course you don’t want to learn from history.

That’s rich coming from someone trying his best to leap to illogical conclusions based on two events that are specifically remarkable for being atypical.