About Joseph Zack Kornfeder
Lived 1898 – 1963 (aged 65). Joseph Zack Kornfeder was a politician.
Joseph Zack Kornfeder (1898–1963), sometimes surnamed "Kornfedder" in the press, was an Austro-Hungarian-born American who was a founding member and top leader of the Communist Party of America in 1919, Communist Party USA leader, and Comintern representative to South America (1930–1931) before quitting the Party in 1934. After his wife was arrested by the secret police during the Great Terror (1937–1938), Zack became a vehement Anti-Communist and testified before the Dies Committee and Canwell Committee (1948).
Background
Joseph Zack Kornfeder was born on March 20, 1898, in Trencsén, Austria-Hungary (now Trenčín, Slovakia). His parents were from Austria, who raised their son Roman Catholic.
In 1914, Zack traveled to Spain to join the Spanish Socialist Workers' Party. (Knowledge of Spanish would serve later when the Comintern stationed him in Central America.)
In 1915, the Kornfeder family emigrated to the United States in 1915, landing in New York City, where they made a home. Zack took a job as a garment worker and joined the Socialist Party of America within a year.
Career
Communist activities
In 1919, Zack became a founding member of the Communist Party of America (CPA). In April 1920, he may have left the CPA along with C.E. Ruthenberg to join the rival Communist Labor Party of America (CLP) in establishing the United Communist Party (UCP). Pseudonyms he used include "A.C. Griffith" and "J.P. Collins" during the underground period. Occasionally, he contributed articles to the Party press on trade union-related matters.
In May 1921, Zack was elected a member of the unified Communist Party of America following its formation at a unity convention held at the Overlook Mountain House near Woodstock, New York. He emerged as an outspoken advocate of elimination of the underground form of political organization.
In 1922, Zack went as a delegate to the 1922 Bridgman Convention of the CPA, raided by police on August 22. Zack was arrested in the Justice Department-directed operation and was held for about four months, finally released in early 1923 on $5,000 bail. Zack was involved in the Communist Party's activities among the trade unions, conducted by William Z. Foster's Trade Union Educational League (TUEL). Zack was chosen as the head of TUEL's National Committee of the Needle Trades Section, which was organized November 22, 1922. During the bitter internecine factional struggle which swept the American Communist movement during the 1920s, Zack was a loyal partisan of the faction headed by Foster and James P. Cannon.
In 1930, Zack was dispatched as a Comintern Rep to South America, where he remained until the fall of 1931. While Zack was at the Comintern's disposal abroad, his wife and son remained in Moscow. In the fall of 1931, Zack was jailed in Venezuela, only gaining his release through the efforts of the United States Department of State. Home in the United States with his American citizen wife and New York City-born son still in the USSR, Zack was named the Secretary for the Eastern District of the Trade Union Unity League (TUUL), successor to TUEL. Zack later claimed that Browder coerced him into signing receipts for $1,500 in Comintern funds that were supposed to have been sent to support Zack's efforts in Central America but never sent as a quid pro quo for the return of his wife and son — a promise upon which Browder never delivered.
In 1936, Zack made an appeal to the US State Department in an attempt to persuade the USSR to allow his wife and child out of the country. His effort proved unsuccessful. In 1937, his wife ran afoul of the secret police during the Great Terror. Apparently, she was arrested as a relative of an enemy of the people: she served 18 years in Gulag labor camps, while their son grew up in a special home. The arrest of his wife turned Zack into an opponent of Joseph Stalin and the USSR. He gave a lengthy account of his career in the communist movement, including details about his activities as a party organizer in the American labor movement and of his break with the Communist International.
"Benjamin Gitlow, left, who will be the general secretary of the Communist party, and Joseph Zack Kornfedder look at a copy of 'Red Star,' which will be the official paper as the American Legion stages 'Communist Day,' April 30, 1950, in Mosinee, Wisconsin. Both are ex-Communists who volunteered to help stage anti-Communist programs."
On May 1, 1950, in Mosinee, Wisconsin, a local American Legion outpost staged a mock Communist takeover to illustrate what life under Soviet conquest might be like. Benjamin Gitlow, twice CPUSA vice-presidential candidate (1924, 1928), played the role of General Secretary of the "United Soviet States of America", while Zack played the new commissar of the newly renamed town of "Moskva." A Soviet flag flew in front of the American Legion outpost.
In May 1951, Gitlow told the Senate's Subversive Activities Control Board that he had "repeatedly discussed" the board with its research director Benjamin Mandel as well as Zack. Gitlow said, "I discussed the conduct of this case. I discussed the attorneys in the case. I discussed the members of the panel." "The Line is Correct–To Realize It Organizationally is the Central Problem" (as "J.A. Zack") (1934) Communist Front Organizations: Types, Purposes, History and Tactics. Columbus, OH: Ohio Coalition of Patriotic Societies, n.d. [c. 1940]. Communist Deception in the Churches: An Address before Circuit Riders, Inc., at a National Committee Conference in Cincinnati, Ohio, October 26, 1952. Cincinnati, OH: Circuit Riders, 1952. Brainwashing and Senator McCarthy. New York: Alliance, 1954. The New Frontier of War. With William Roscoe Kintner. Chicago: Regnery, 1962.
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Important facts
People in Joseph Zack Kornfeder's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Joseph Zack Kornfeder's
Frequently asked questions
Who was Joseph Zack Kornfeder?
American Communist leader
When was Joseph Zack Kornfeder born?
Joseph Zack Kornfeder was born on 20 March 1898 in Trenčín.
When did Joseph Zack Kornfeder die?
Joseph Zack Kornfeder died on 1 May 1963 in Washington, DC.
What was Joseph Zack Kornfeder's occupation?
Joseph Zack Kornfeder was a politician.
Sources & further reading
· Wikipedia: Joseph Zack Kornfeder
· DBpedia: Joseph Zack Kornfeder
Cite this page
APA: Biography.guide. (2026). Joseph Zack Kornfeder. https://biography.guide/joseph-zack-kornfeder/
MLA: "Joseph Zack Kornfeder." Biography.guide, https://biography.guide/joseph-zack-kornfeder/.
Chicago: "Joseph Zack Kornfeder." Biography.guide. https://biography.guide/joseph-zack-kornfeder/.
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