Flashback to the ’50s and heroic moms’ protest

It looked like 1958, as Jane Jacobs’s “Stroller Brigade” invaded Washington Square Park once again last week as they prepared to protest Robert Moses’ plan to run a sunken roadway through the park. It was actually for an episode of the Amazon series “The Marvelous Mrs. Maisel,” about a woman with a staid Upper East Side life who gets adventurous and becomes a stand-up comic in Greenwich Village.