Can be posters, advertisements, videos/films and maybe national/revolutionary anthems/songs.

My favorites so far are:

"Is Colorado in america?" (Basically a US flag with various constitutional rights being
written as violated in the US flag's stripes in Colorado, including the 2nd amendment.)

"Daisy" (Lyndon B. Johnson campaign attack ad, implying that if you do not vote for LBJ, we would have nuclear war.)

Honorary mentions for: Wake up, by the Lincoln project, which has a very similar "these are the stakes" tune for 2020. Mourning in America and We will vote are pretty good too.