Thousands of Mexican and Mexican-American women working in canneries in southern California established effective, democratic trade union locals run by local members. These rank-and-file activists skillfully managed union affairs, including negotiating such benefits as maternity leave, company-provided day care, and paid vacations--in some cases better benefits than they enjoy today. But by 1951, UCAPAWA lay in ruins--a victim of red baiting in the McCarthy era and of brutal takeover tactics by the International Brotherhood of Teamsters.