The video ends by urging viewers, in large capital letters to “TAKE BACK CONTROL.”

After the video was taken down , Lawrence Garvey , the chairman of the Rockland County Republican Party, defended it in a statement.

“Regardless of your thoughts of the video, there are facts that cannot be ignored,” he said. “This is not, nor has it ever been a religious issue. It is an issue of right and wrong.”

He added that “anyone who dares speak up about overdevelopment, corruption or education is immediately labeled as anti-Semitic.”

Ed Day, the Republican county executive, acknowledged that the tone of the video was “unacceptable,” adding that he had asked the county party to take it down.

But, he wrote in a statement, “the content of the video is factual.”

“I have a great deal of respect for our Jewish neighbors and want them to know that as their county executive, I will always stand up against hatred,” he said. “That said, the concerns raised about overdevelopment are accurate, well-grounded and desperately need to be addressed, but this must be done in a way free of rhetoric and rancor.”

Mr. Wieder, the Democratic lawmaker featured in the Republicans’ video, said the ultra-Orthodox voting bloc was not united in its support for development projects in the region, yet was used as a scapegoat for overdevelopment.

“I was sad to see that my face was used in this terrible video,” he said, adding, “I myself am against overdevelopment.”