When World War II ended, the Bracero program continued. Legal anthropologist Martha Menchaca states that this was "regardless of the fact that massive quantities of crops were no longer needed for the war effort ... after the war, the braceros were used for the benefit of the large-scale growers and not for the nation's interest." The program was extended for an indefinite period in 1951. In the mid-1940s, labor organizer Ernesto Galarza founded the National Farm Workers Union (NFWU) in opposition to the Bracero Program, organizing a large-scale 1947 strike against the Di Giorgio Fruit Company in Arvin, California. Hundreds of Mexican, Filipino, and white workers walked out and demanded higher wages. The strike was broken by the usual tactics, with law enforcement on the side of the owners, evicting strikers and bringing in undocumented workers as strikebreakers. The NFWU folded, but served as a precursor to the United Farm Workers Union led by César Chávez. By the 1950s, opposition to the Bracero program had grown considerably, as unions, churches, and Mexican-American political activists raised awareness about the effects it had on American labor standards. On December 31, 1964, the U.S. government conceded and terminated the program.