Overreaction?There's definitely some European cultural guilt with the holocaust when it comes to antisemitism. I think there's an overreaction almost in such circumstances (how Keir is behaving right now is a prime example).
I think black racism is so ingrained, subconsciously or otherwise, that we're just so blind to our biases, behaviour, and words until we're made aware. That incident with whatsherface from the Royal Family asking the black lady about 10 times where she's from is a good example of that.
You know that basically 90% of European Jews were killed or "left" Europe.
The only reason that there might be less perceived Antisemitism now might be just the fact that there are not enough Jews around anymore. And many of them that stayed have hidden their Jewishness.