Politics has always been involved in art. It can be authoritarianism. There were communists as well as McCarthyites in Hollywood. One McCarthyite was Ronald Reagan who became active in politics. You can ask yourselves should actors run for political office? There were the "naive" members of the communist party who were blacklisted. There was controversy over Lucille Ball. Cecile DeMille of "10 commandments" fame was a McCarthyite I believe. Movies about communes (communism) were not allowed to be shown in the 1920's. There were movies glorifying the Klan. On and on. The shame of the protest was that people would have missed a movie that could have helped their understanding of the conflict and paved the way towards reconciliation. Authoritarianism is not democratic; so politics is not always democratic.
Five arrested in anti-terror raids in Sydney (DPA)
from the article: The cowardice, the vanity, the sin of boycotting Israel