The NYPD says hate crimes are up dramatically in the city while the total number of serious crimes has dropped.

Police say 145 hate crimes were reported in the first four months of the year, an increase of 67 percent compared to the same period last year, when 87 were reported. 

The total number of serious crimes is down 6.7 percent so far this year.

One reason for the spike in hate crimes: A surge in anti-Semitic incidents. The NYPD says 82 such incidents were reported through the end of April, compared to 45 during the same period last year, an 82 percent jump.

"Forces of white supremacy have been unleashed, and as you know, those are profoudly anti-Semitic forces," said Mayor Bill de Blasio. "I think what's happening here in this country that a lot of folk are used to be told it was unacceptable to anti-Semitic, it's unacceptable to be racists, and now they're getting more permission."

The Anti-Defamation League released a statement calling the NYPD numbers "deeply disturbing" and saying New York is no place for hate.