One of the Church history topics I find the most fascinating is that of the Nauvoo Expositor and the lead-up to and aftermath of the martyrdom.
My first real exposure to the story of the Expositor was as a sophomore in high school in Utah. An anti-LDS substitute math teacher decided to take it upon himself to lecture us on the evil censorship of the church many of us in the class belonged to. Looking back now, I can see how wildly inappropriate it was for a substitute teacher to bring this up in order to harass and criticize the religious beliefs of a bunch of teenagers who were just trying to learn pre-calculus. But unfortunately, at the time it wasn’t that unusual for us to have teachers who didn’t like the church. It didn’t occur to us that these teachers were crossing way over the line by actually vocalizing that dislike in class.