Open Culture: Martin Scorsese Create a List of 38 Essential Films About American Democracy.
"I learned a lot about citizenship and American ideals from the movies I saw. Movies that look squarely at the struggles, violent disagreements and the tragedies in history, not to mention hypocrisies, false promises. But they also embody the best in America, our great hopes and ideals."
Haven't seen some of these. On the to-be-watched list.