While I agree that antisemitism is problematic and shameful, there doesn't appear to be much beyond public perception to substantiate claims that it's growing (at least, not in the West). Not that that's the thrust of your argument. I've just heard this echoed elsewhere, and it never struck me as correct, given that acceptance of all minorities seems to be on the rise over the decades.
The changing face of antisemitism is interesting. "Traditional" antisemitism, if we can call Christian European antisemitism as traditional, appears to be ebbing, while Muslim-initiated antisemitism has spiked. It suggests that liberal democracies, and those who buy into them, are becoming more accepting, and hopefully this can be extended to being more accepting of all marginalized groups. But the Israeli-Arab conflict appears to be a general Jewish-Muslim conflict in Europe, which is sad. Any way you slice it, antisemitism is certainly too high, but hopefully the long term trend is in the right direction.