Sigman could not regain control of the New York locals, including Dressmakers' Local 22, headed by Charles S. Zimmerman, where the CP leadership and their left-wing allies, some anarchists and some socialists, enjoyed strong support of the membership. Local 22 rallied to prevent the International from physically retaking their union hall. Those unions led the campaign to reject a proposed agreement that Sigman had negotiated with the industry in 1925, bringing more than 30,000 members to a rally at Yankee Stadium to call for a one-day stoppage on August 10, 1925.