There’s no other way to begin than to say Lisa Cortes and Liz Garbus’s new documentary “All In: The Fight for Democracy” is the most important film of 2020.

Voter suppression. Let these words sink in. Voter suppression has been in play for hundreds of years. As the film reminds us (or rather, those who need to be reminded), the constitution starts with three words, “We the People.” But who are “the people”? When it was