I used to write about Europeans and their apathetic attitudes ­toward the Jew-hatred around them. Synagogues torched, Jews beaten — just another day on the Continent.

But now the demon is here, in America. Worse, it’s stalking Jews with increasing regularity in New York City, my city, home to the largest Jewish population outside Israel. Hizzoner’s vague universalist rhetoric obscures this raw reality.

And it isn’t just his ideological blinders. The mayor has also helped create an anti-police ­atmosphere, in which the vigilant presence of officers is considered a bad thing. At an anti-police rally last month, there were signs calling for violence against the NYPD.

De Blasio’s response? He insinuated that the idea that there’s anti-police sentiment in our city is, yes, another right-wing plot.