David Hilberman was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 cartoon animator and one of the founders of classic 1940s animation.

Hilberman worked for Walt Disney Studios

Walt Disney Pictures

Walt Disney Pictures is an American film studio owned by The Walt Disney Company. Walt Disney Pictures and Television, a subsidiary of the Walt Disney Studios and the main production company for live-action feature films within the Walt Disney Motion Pictures Group, based at the Walt Disney...

 and helped animate Snow White and the Seven Dwarfs

Snow White and the Seven Dwarfs (1937 film)

Snow White and the Seven Dwarfs is a 1937 American animated film based on Snow White, a German fairy tale by the Brothers Grimm. It was the first full-length cel-animated feature in motion picture history, as well as the first animated feature film produced in America, the first produced in full...

and Bambi

Bambi

Bambi is a 1942 American animated film directed by David Hand , produced by Walt Disney and based on the book Bambi, A Life in the Woods by Austrian author Felix Salten...

. His involvement in unionizing colleagues and organization of the 1941 Disney strike

Disney animators' strike

The Disney animators' strike was a labor strike by the animators of Walt Disney Studios in 1941.-History:The 1930s led to a rise of labor unions in motion pictures as in other industries such as The Screen Actors Guild which was formed in 1933. Animators of Fleischer Studios went on strike in 1937...

 cost him his job at the studio. After being fired by Disney, he founded Industrial Film and Poster Service with Zack Schwartz and Stephen Bosustow

Stephen Bosustow

Stephen Reginald Bosustow was a Canadian-born American film producer from 1943 until his retirement in 1979. He was one of the founders of United Productions of America and produced nearly 600 cartoon and live action shorts. He is chiefly remembered for producing a string of Mr...

 in 1945. It later became UPA

United Productions of America

United Productions of America, better known as UPA, was an American animation studio of the 1940s through present day, beginning with industrial films and World War II training films. In the late 1940s, UPA produced theatrical shorts for Columbia Pictures, most notably the Mr. Magoo series. In...

. He was blacklisted in the 1950s after Walt Disney

Walt Disney

Walter Elias "Walt" Disney was an American film producer, director, screenwriter, voice actor, animator, entrepreneur, entertainer, international icon, and philanthropist, well-known for his influence in the field of entertainment during the 20th century. Along with his brother Roy O...

 accused him of being a communist before the House Un-American Activities Committee

House Un-American Activities Committee

The House Committee on Un-American Activities or House Un-American Activities Committee was an investigative committee of the United States House of Representatives. In 1969, the House changed the committee's name to "House Committee on Internal Security"...

.