You Lie! Outburst (2009)

Campaign's disdain for civility could leave lasting damage

When a South Carolina congressman shouted "You lie!" during a speech by President Barack Obama in 2009, House members rebuked him for violating norms of civility. After this year's presidential campaign, the idea that people were once troubled by the outburst seems almost quaint.

Civility in politics has been declining for years, both a cause and symptom of a changing culture where anonymous verbal assaults are fired freely across the internet, and cable TV routinely broadcasts words once banned from the airwaves. But Donald Trump's presidential run took name-calling and mockery — things that voters long said they detested in their candidates — and...

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