Should the history channel have shown a documentary on the Ku Klux Klan?
Absolutely yes. The History channel is not a biased network. Watching a documentary there is like viewing an encyclopedia entry in full motion. It is important to ensure that dark times in our history are not forgotten so that we can learn to avoid repeating the same mistakes again in our future. It is also important for people to know to what extent prejudice and hate can pollute our society even today. When we look at our darker sides and see them for what they are we are more apt to take stock of our own shortcomings and attempt to rectify them.
We should NEVER censor history. So, with that in mind, an organization that calls itself the “History Channel” should not censor history either. I believe a “channel” about history should provide its viewers with a complete account of events in the past from several different perspectives. So, your answer is yes. The History Channel should have shown that documentary.