From archive.org a selection of classic movies to download :
Fritz Lang's classic M (pictured)
Luis Buñuel's Un Chien Andalou
F.W. Munarau's 1922 Nosferatu
Das Kabinett des Doktor Caligari the sets of which were believed to have been a great influence on Kurt Schwitters Merzbau
Eisenstein's Battleship Potemkin
Hitchcock's 1934 The man who knew too much
Bela Lugosi in White Zombie
And finally a 1942 propaganda film for ehh...hemp Hemp for victory