The opening of Space Runaway Ideon (1980). Directed by Yoshiyuki Tomino (Mobile Suit Gundam, Xabungle, Aura Battler Dunbine, Heavy-Metal L-Gaim).
Ideon is one of the lesser known anime series that premiered while anime was still fresh. It features a tragic plot in which every character is horrifically killed. It's quality rivals that of the mobile suit gundam series. There are 39 episodes, plus a movie that briefly goes through the episodes, and a concluding movie that may have the most shown deaths in anime history.