If you choose to buy this fim, and I recommend you do [the scene,in pouring rain, of a crowd becoming a mob, is particularly chilling], then be careful. Amazon do not differentiate between the different available editions and lump all customer reviews together.
DO NOT BUY the Delta Edition, with the title in Yellow and the garish blurred coloured picture of the 2 stars. This is a shocking production, worse than a pirate edition, made from a dirty, poorly preserved original, and duped onto DVD in the cheapest, grainiest manner possible. It may have been copied onto DVD from an old VHS original, it looks so bad. Another edition, with the title in Red, is a restored version, and so much better, with some glimpse of the sharpness of the original photography.