[1] Swabeck was born in Denmark and emigrated to the United States where he became one of the founding members of the Communist Party.
Swabeck visited Leon Trotsky in his exile in Turkey in 1933.
In the late 1950s, Arne Swabeck became a Maoist and left the SWP in 1967.
Swabeck wrote the book entitled The Split of the Socialist Party which was published by New England Free Press in 1969.
He was briefly interviewed as one of a series of elderly witnesses to events described in the movie.