Rabinowitz was hired right out of law school by the progressive law firm Hays, Podell and Shulmman. Rabinowitz was a law clerk at Hays, Podell until mid-1938, when Rabinowitz followed Hays, Podell junior partner, the leftist Ben Algase, into the firm of Louis B. Boudin, a labor lawyer, active in "radical politics." In 1944, he formed a new firm with Boudin's nephew Leonard Boudin: Rabinowitz and Boudin, currently Rabinowitz, Boudin, Standard, Krinsky & Lieberman, in New York City. Rabinowitz and Boudin were the senior partners, joined by Michael Standard, Michael Krinsky, and Eric Lieberman. The firm's papers, held by the Tamiment Library of New York University, describes it as follows:
The firm represented numerous labor unions, most notably the American Communications Association, and assisted clients in passport cases, loss of employment and other legal matters arising from the targeting of individuals in government security investigations. The firm has been deeply involved in civil rights work and, during the Vietnam War, successfully defended, on First Amendment grounds, some of the leading opponents of the war, as well as draft resisters and conscientious objectors.
Clients included: Julian Bond, Paul Robeson, Alger Hiss, Benjamin Spock, Daniel Ellsberg, Dashiell Hammett, the Church of Scientology, and Jimmy Hoffa. It has also represented the government of Chile under Salvador Allende, and the Cuban government since June 1960 and has been Cuba's only U.S. legal counsel in all U.S.-related matters. Other clients included: Rockwell Kent, other unions, the Fellowship of Reconciliation, and other non-union organizations. In November 1947, Rabinowitz ran as American Labor Party candidate against Republican candidate Jacob P. Lefkowitz and Democratic/Liberal Party of New York candidate Abraham J. Multer for the Fourteenth Congressional District of New York, caused by the resignation of Leo F. Rayfiel. , shown here in 1913 photo with Paterson silk strike leaders Patrick Quinlan and Carlo Tresca left and Adolph Lessig and Bill Haywood right In 1951, Rabinowitz joined more than half a dozen other lawyers in defending 17 Communist Party members, including Elizabeth Gurley Flynn. The communists were accused of charged conspiring to "teach and advocate violent overthrow" of the government. The other lawyers were: Abraham L. Pomerantz, Carol Weiss King, Michael Begun, Harold I. Cammer, Mary Kaufman, Leonard Boudin, and Abraham Unger. Later, they were relieved by O. John Rogge, gangster Frank Costello's lawyer George Wolf, William W. Kleinman, Joseph L. Delaney, Frank Serri, Osmond K. Fraenkel, Henry G. Singer, Abraham J. Gellinoff, Raphael P. Koenig, and Nicholas Atlas. Rabinowitz argued many cases before the United States Supreme Court. In 1963, when daughter Joni Rabinowitz was convicted of perjury regarding work for the Student Nonviolent Coordinating Committee, he won her release on the grounds that the jury under-represented a local black population. In 1984, he played an "important role in anchoring the defense" when Kathy Boudin, Weather Underground member and Leonard Boudin's daughter, pled guilty to murder as part of armored truck robbery.
Associations
Rabinowitz helped found the National Lawyers Guild in 1937 and served as its national president from 1967 to 1970. From 1942 until the early 1960s, he was a member of the American Communist Party. During the 1940s, he was active in the American Labor Party and ran for office on their ticket.
Rabinowitz was married twice, first to the former Marcia Goldberg of Brooklyn, New York, and following their divorce in 1967, he married filmmaker, journalist and author Joanne Grant Rabinowitz. He died at his Manhattan home on November 16, 2007.
