In 1932, Mildred Harnick began holding secret meetings in her apartment.  Together, this small band of political activists wrote leaflets that denounced Hitler and called for revolution. Under the cover of night, they slipped the leaflets into mailboxes, public restrooms, and phone booths around Berlin. Mildred also began helping  Jews escape, plotting acts of sabotage, and recruiting more and more working class Germans to the cause.  By 1940, hers was the largest underground resistance group in Berlin.