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How television has become a valuable historical archive, and how film can be replayed to haunt those taped, not least the tobacco industry bosses who lied about nicotine addiction.

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15 minutes

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Why do Americans love their flag?

Why do Americans love their flag?

How The Stars and Stripes became an emotional symbol of a nation.

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Discover more programmes

The best of Radio 4: opinion pieces, history, international reporting, books and culture.