How US politics got so insulting (Hint: it didn't start with Trump) – video

Many feel this US election cycle has been the dirtiest yet in terms of campaigning. Donald Trump has viciously attacked Kamala Harris, including questioning her racial identity and her mental resilience, and held rallies marked by racist comments, insults and dangerous threats about immigrants. But mudslinging has always beenpart of US politics. The Guardian's US politics editor in London, Chris Michael, digs into the history of personal attacks, why people feel things are getting worse and the dangers of Trump's 'nasty' tactics

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