"There are facts, there are opinions, and there are lies," says historian Deborah Lipstadt, telling the remarkable story of her research into Holocaust deniers -- and their deliberate distortion of history. Lipstadt encourages us all to go on the offensive against those who assault the truth and facts. "Truth is not relative," she says. Note: Comments are disabled for this video. You are welcome and invited to comment on the talk on TED.com, https://go.ted.com/Cyoy.
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