Born in Brooklyn, New York, in 1911 to working class parents, Donner earned both his bachelor's and master's degrees (1934) from the University of Wisconsin and a law degree from Columbia University in 1937.[1][2]
With attorneys Arthur Kinoy and Marshall Perlin he founded the New York firm Donner, Kinoy & Perlin, which specialized in representing progressive and leftist clients, including Soviet spy Morton Sobell and the Labor Youth League. In the 1950s, the firm represented numerous individuals, including labor officials, who refused to take loyalty oaths or to testify on their membership in communist organizations, as well as several who were prosecuted under the Smith Act.[3][4]
In 1977, Donner filed for administrative damages for William Albertson's widow, which led to a lawsuit in 1984 that went to appeal and then the Supreme Court before the federal government settled out of court for $170,000.[7]
Beginning in 1970, Donner headed the Project on Political Surveillance for the ACLU. During that time he wrote several books outlining official use of domestic surveillance and the use of Red Squads, programs like COINTELPRO, and other agencies to infiltrate organizations suspected of political dissent. Donner was particularly interested in the “modern” version of these policing organization that were focused on groups such as Veterans Against the Vietnam War. Many of these policing organizations infiltrated and were the majority members of some of these groups.
Donner also cited the government's use of scapegoats to divert attention from government criticism onto other political groups.