Cinematography: Good vs. Evil in M
01:00:06
  Narrator: The way viewers understand the dark world of M and its images is indeed more than just good versus evil. And the film's cinematography works relentlessly to obscure those distinctions. Criminals and the police are regularly confused and visually blurred together. As Lang alternates between scenes of the police and the mob bosses, both groups gathering to discuss how to catch the murderer, the similarities are striking. Both groups are clustered around a table, plotting and planning in excessively smoky rooms. Even the murderer, Beckert, played by Peter
01:00:38
  Lorre, struggles to understand his own violence and evil. At one point, he examines and tugs at his own face while looking in a mirror, trying to understand how such a monster can exist beneath this pudgy baby-face. And although we know him to be evil, Beckert's chubby body is strangely reminiscent of Elsie's balloon tangled in the telephone wires, a sign of destroyed innocence.