But the Jewish business owners told us they're equally disturbed by who they believe committed the vial act.
They blame fellow Jews in Monsey who belong to an ultra-orthodox Jewish sect.
They base that claim on the numerous people who each day come in to their long-time service center and ask them to take down the flag.
That very scenario happened on Monday while we were there.
Joel Wagschal gave us the reasoning why.
"We are jews. We are against Israel. Because we are Jews as we believe Israel is a Zionist state, it is not a Jewish state," he said.
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Joe Kurek, 73, has owned the Monsey Service Center for 40-years.
The stolen flag was a gift from a dear friend who died last year - a friend who served in the military and brought the flag from Israel to Monsey.
Joe's daughter manages the shop. She told us each day she turns away potential customers who say they'll give her some business if she takes down the flag. No way, says Lauren Pepper. She says the flag is about much more than just religion. It's also about pride and identity.
"My father was born in Israel. He came here when he was 12. His parents were survivors of the holocaust. They went to Israel after the war. It's in our blood. It's who we are," Pepper said.
A new flag is up and the owners say they are not taking it down.
They say what they really want is the original flag back.
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