In so many ways, forces unleashed in response to the Movement have come to dominate our politics, and technology is allowing the same injustices to be seen anew.

One of the biggest challenges for us is that people have different accounts. People say different things happened at different times, and when you're trying to sort through all that, how do you decide what's right?

It's important to realize that the series actually grows with the reader. "March: Book One" is a great introduction for kids as young as eight or nine years old. But then they grow with the reader. Book Two is bigger, Book Three is even bigger. And they grow more violent and more confrontational.

Nothing surprised me more, and meant more to me, than seeing an entire class of ninth graders mob Congressman [John] Lewis at a book festival.

What crystallized the importance of speaking out like that - of making nonviolence not just a tool or a tactic, but a way of life - was in San Diego [at Comic-Con]. One of the young girls who marched with us was wearing a hijab, and she came up to me afterward because I talked about my beard, and I talked about why I was doing it, and she came up and she gave me a hug, and she was crying. And she said, "Thank you. You have no idea how the other students treat me because they're shown that this is OK by Donald Trump. Thank you for speaking out."

For me, it was a mission on the hill to sensitize people, because they don't know Muslim immigrants. And for the most part, a lot of us just keep our heads down. But if I can engage someone in conversation, someone who maybe does support Donald Trump, or at least isn't speaking out against him, and I can show him the fear that I have, then maybe I can turn that tide.

We don't want to just tell [students] who the people are, we don't want to just tell them what happened - we want to show the process by which it formed itself.