There were NYPD Counterterrorism units stationed at the Park East Synagogue on the Upper East Side.
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"You worry about going to service, changes have to be made - you have to protect everybody," says Larry Newman.
And as people made their way to Shabbat services in Midtown, fear was not stopping them.
"I had to be here - I had to show solidarity and lack of fear," said Alan Dershowitz.
In a major movement, people from all faiths came to synagogues in the city and throughout the country to support Jewish communities and Shabbat - a Jewish day of rest from Friday evening to Saturday evening, and to remember the 11 lives lost in the horrific Pittsburgh synagogue shooting a week ago.
"It's not about the Jewish religion. It's about all Americans, citizens of America, standing together and fighting against hate, no matter what source it is," Newman adds.
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World leaders were also showing support with '#ShowUpForShabbat' making waves on social media.
The news spread quickly - some people who never attended Shabbat services say they just had to come.
David Youngworth was one of them.
"I felt as a Jew I should show up, I should honor the victims, and honor our faith," Youngworth said.
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