Every film studies student is forced to watch an infant in a carriage careen down a staircase to its death. They do this because it’s important. The Odessa Steps sequence in Sergei Eisenstein’s Battleship Potemkin (1925) is a Cinema Studies 101-level text in film editing. As a theorist, Eisenstein, together with contemporary Lev Kuleshov, argued for a cinema built on the revolutionary effect of montage: meaning was created in the edit. In Battleship Potemkin, this meant a shot of a horrorstuck face and that shot of the runaway baby carriage played on the audience’s then-fledgling grasp on cinematic language. Terror…