Gathering near Brooklyn's Grand Army Plaza, everyday citizens join elected and clergy leaders to send a unified message.

"We are all one blood today," said Kirsten Foy of the National Action Network.

"All of the prejudices, anti-Semitism, racism, homophobia, you name it, are un-American," said Rep. Jerrold Nadler, whose district covers parts of Manhattan and Brooklyn.

There was a show of support for victims of Saturday's shooting at the Tree Of Life synagogue in Pittsburgh hours after suspected gunman Robert Bowers appeared in court, arriving injured in a wheelchair. 

President Donald Trump now plans to visit Pittsburgh Tuesday to offer comfort to a grieving community.

"The president has denounced racism, hatred, and bigotry in all forms on a number of occasions," said White House Press Secretary Sarah Sanders.

But some are calling for Trump to stay away, saying his rhetoric is partly to blame. 

The current rabbi of Tree of Life is at odds with the synagogue's former president on the issue.

"The president of the United States is always welcome," said rabbi Jeffrey Myers of the Tree of Life Synagogue. "I'm a citizen. He's my president."

"I do not welcome this president to my city," said Lynnette Lederman, the former president of the Tree of Life Synagogue. "He is the purveyor of hate speech. The hypocritical words that come from him tell me nothing."

In a tweet early Monday, Trump said:

Some at the vigil in Brooklyn urged civility as the only proper response.

"Words really matter because they can lead to actions that will be sometimes, unfortunately, what happened in Pittsburgh," said Bob Kaplan of the Jewish Community Relations Council of New York.

At least one person NY1 spoke with said it does provide some measure of comfort to see people of all different faiths and backgrounds and cultures to come together to stand defiantly against hate.