Allow me to preface this post with, everybody makes mistakes. You can imagine the pressure on a public figure, and the fact that being on camera so much, they're bound to say something wrong or contradict themselves at some point in time. That said, some things people say are not so much "mistakes" as they are evidence of that person's ignorance. When you add a refusal to admit you're wrong to ignorance, you have a very dangerous combination. The right thing to have done in this situation was to say, "oh, I mispoke, I know Revere was warning the Americans, I just got tangled up in my words." End of story, but no, not for Sarah. Let's re-write history rather than admit to a simple mistake.