According to the L.A. Times:
David Hilberman, whose union activities at Walt Disney Studios and
brief membership in the Communist Party led to his blacklisting and
shadowed a long career that included founding the innovative United
Productions of America studio, has died. He was 95.
Hilberman died of natural causes July 5 at Stanford University Medical Center, according to his family.
Hiblerman, was an accomplished artist and studio operator, but is perhaps best remembered, at least in Disney circles, as being the man singled out by Walt Disney before the House Un-American Activities Committee in regard to the 1941 animator’s strike that Hilberman helped organize. Disney, allegedly, believed the strike to be affiliated with communists and told the committee that one artist was
"the real brains of this, and I believe he is a communist. His name is
Needless to say, this was not a ringing endorsement for Hiblerman.