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Yeah, as I say in a sibling comment, it's a fair reading of the movie that it's ultimately pro-surveillance because it shows that despite being immoral, unethical mass surveillance catches the bad guy. But "surveillance is unethical but necessary when battling the forces of evil" is worlds away from "surveillance is totally awesome and everyone should buy a Ring camera."
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That kind of change in morality seems possible for an 18 year timespan? If anything the slope is closer to typical than to the maximum recorded.

The moral norms of societies, in many aspects, changed even more from 1928 to 1946.

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