A city-funded security van is now parked outside one synagogue. Around the corner, at another temple, no security is seen.

Nor are there guards at a major Jewish girls school nearby. NY1 caught up with the school's building manager.

"For the professional troublemakers, an armed guard ain't going to help. Because you're not gonna have the whole building surrounded with guards," said Isaac Friedman of United Talmudical Academy.

Or maybe it should be. 

Security has been a major concern for Jewish institutions in the city for years, but the massacre at a Pittsburgh synagogue over the weekend is prompting the Jewish commuinity here to take a fresh look at what additional measures might be necessary.

The NYPD has stepped up patrols, but many are asking what happens when those officers go away. 

"You can't just ignore what's happening on the outside, said David Pollock of the Jewish Community Relations Council. There are bad people in the world, and people want to come in and do damage."

The Jewish Community Relations Council recommends that synagogues hire guards to control access, but says "it depends" whether to arm them.

City Councilman Chaim Deutsch of Brooklyn says arming them is a no-brainer.

"It's very important that we don't rely on fighting hate with love alone, but taking a proactive approach by having security, armed security," Deutsch said.

But in Pittsburgh, the shooter allegedly shot four officers with a semiautomatic rifle. So some question how every Jewish institution would match such firepower, to say nothing about whether guns even belong in a place of prayer. 

"In a place like Borough Park, that will mean you're going to have quite a few thousand armed officers, and if they have to match AR-15's then you're not going to have Borough Park. You're going to have Fort Borough Park," said Yosef Rapaport, a Borough Park resident.

NY1 asked Deutsch how heavily armed guards should be.

"We don't know what the future holds, and we have to do our due dilligence," he said.

The cost of armed guards is just too high for some small houses of worship. Federal grants are available for religious institutions to buy cameras, bulletproof windows and other hardware, but not for hiring guards. Expect calls to increase for taxpayer funds for personnel: guards, even armed guards.