The Brooklyn shopkeeper was already home for the night when her phone rang: a man who said he was from a neighborhood “modesty committee” was concerned that the mannequins in her store’s window, used to display women’s clothing, might inadvertently arouse passing men and boys.

“The man said, ‘Do the neighborhood a favor and take it out of the window,’ ” the store’s manager recalled. “ ‘We’re trying to safeguard our community.’ ”

In many neighborhoods, a store owner might shrug off such a call. But on Lee Avenue, the commercial spine of Hasidic Williamsburg, the warning carried an implied threat — comply with community standards or be shunned. It is a potent threat in a neighborhood where shadowy, sometimes self-appointed modesty squads use social and economic leverage to enforce conformity.

The owner wrestled with the request for a day or two, but decided to follow it. “We can sell it without mannequins, so we might as well do what the public wants,” the owner told the manager, who asked not to be identified because of fear of reprisals for talking.