Trumbo does a great job showing the injustice of the blacklist throughout the late 40's and the 50's. I've always been interested in the time period because, in the way I have always looked at it, the persecution of communists seemed so incredibly unconstitutional, so much so that I always thought I was missing a part of the story; luckily (or unluckily), I wasn't missing anything and my assumptions about the status of the blacklist are actually quite true. Through Dalton Trumbo's story, audiences can see the greater implications of the blacklist and the persecution of communists in America at the time of the Cold War.
