William Moses Kunstler was an American self-described "radical lawyer" and civil rights activist, known for his politically unpopular clients. Kunstler was a board member of the American Civil Liberties Union and the co-founder of the Law Center for Constitutional Rights, the "leading gathering place for radical lawyers in the country".
Kunstler's defense of the "Chicago Seven" from 1969–1970 led The New York Times to label him "the country's most controversial and, perhaps, its best-known lawyer ..." Kunstler is also well known for defending members of the Catonsville Nine, Black Panther Party, Weather Underground Organization, the Attica Prison rioters, and the American Indian Movement. He also won a de facto segregation case regarding the District of Columbia's public schools and "disinterred, singlehandedly" the concept of federal removal jurisdiction in the 1960s. Kunstler refused to defend right-wing groups such as the Minutemen, on the grounds that: "I only defend those whose goals I share. I'm not a lawyer for hire. I only defend those I love."