PSB Frontline ran an interesting documentary on the JFK assassination and the conspiracy theories that surround it.
Washington Decoded has an incisive review.
According to the movie, 70% of the American public believes that the assassination was carried out by a conspiracy. That should be fairly sobering to those who are full-throated proponents of the "wisdom of crowds".
After all, here we have the most investigated crime in history. And yet, more people believe fairy tales than the honest, messy historical truth.
Just found a great example: Here is a journalist and true crime blogger who refuses to accept that the Lone Gunman was a Lone Gunman. Even more unbelievable is that he thinks Jim Garrison was a poor victim who was "hounded to his grave" for trying to find the truth. How can history stand a chance against such arrogant and invincible ignorance?