If you've ever been to the Little Big Horn Battlefield you realize immediately that Custer could not have been the least bit surprised by the size of the force he was about to engage; neither was there any shortage of Southern Cheyenne Warriors on the Washita River. Custer wasn't the stupid, deranged fool portrayed in this awful dreck, and he certainly wasn't a coward.
If the snippet was intended to remind me that most of what liberal believe is BS, it was grauitous; I have no illusions about the silly crap they believe. If it's a warning that we ought to simply tolerate the falsifaction of our history and abandonment of rationality because fighting it is too dangerous, it's worse than pointless.
Rand's admonition is apt: "You can ignore evil. But you can't ignore the consequences of ignoring evil."