I think it doesn't make sense to give here examples of movies which couldn't be made because the technology wasn't as advanced as it is today. That's just bullshit. For that, why not start a similar thread, like "Cars that could never be made today"
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Anyway, as for morality stuff, I think that Chaplin's "The Dictator" couldn't be made today. It was pretty bold even for it's time.
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