The city says hate crimes are up in the five boroughs.
The NYPD says it has seen a 55 percent increase in hate crimes compared to the same time last year.
That includes a 94 percent surge in anti-Semitic incidents.
The department is also looking into recent bomb threats directed at Jewish community centers, most recently on Staten Island Monday.
"I understand against a backdrop of growing numbers of anti-Semitic incidents all over this country and all over this world, which is a pattern that has to be addressed profoundly. We're trying to do it here in this city," Mayor Bill de Blasio said. "But the backdrop is worrisome because you saw what happened with the desecration of the cemetery the other day. This is becoming more widespread, and I've been very clear about, an atmosphere of hate has been fostered in recent months in America, and we have to stop it."
Officials say NYPD officers are visiting jewish centers more frequently, and the department is working with the FBI to help put a stop to the recent trend.