By late morning on Wednesday, Occupy Wall Street, a noble but fractured and airy movement of rightly frustrated young people, had a default ambassador in a half-naked woman who called herself Zuni Tikka. A blonde with a marked likeness to Joni Mitchell and a seemingly even stronger wish to burrow through the space-time continuum and hunker down in 1968, Ms. Tikka had taken off all but her cotton underwear and was dancing on the north side of Zuccotti Park, facing Liberty Street, just west of Broadway. Tourists stopped to take pictures; cops smiled, and the insidiously favorable tax treatment of private equity and hedge-fund managers was looking as though it would endure.

“I’ve been waiting for this my whole life,” Ms. Tikka, 37, told me.

“This,” presumably was the opportunity to air societal grievances as carnival. Occupy Wall Street, a diffuse and leaderless convocation of activists against greed, corporate influence, gross social inequality and other nasty byproducts of wayward capitalism not easily extinguishable by street theater, had hoped to see many thousands join its protest and encampment, which began Sept. 17. According to the group, 2,000 marched on the first day; news outlets estimated that the number was closer to several hundred.

By Wednesday morning, 100 or so stalwarts were making the daily, peaceful trek through the financial district, where their movements were circumscribed by barricades and a heavy police presence. (By Saturday, scores of arrests were made.) By Thursday, the number still sleeping in Zuccotti Park, the central base of operations, appeared to be dwindling further.

Members retained hope for an infusion of energy over the weekend, but as it approached, the issue was not that the Bastille hadn’t been stormed, but that its facade had suffered hardly a chip. It is a curious fact of life in New York that even as the disparities between rich and poor grow deeper, the kind of large-scale civil agitation that Mayor Michael R. Bloomberg recently suggested might happen here hasn’t taken shape. The city has two million more residents than Wisconsin, but there, continuing protests of the state budget bill this year turned out approximately 100,000 people at their peak. When a similar mobilization was attempted in June to challenge the city’s budget cuts, 100 people arrived for a sleep-in near City Hall.