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As the second presidential debate began, Hillary Clinton chose not shake hands with Donald Trump.。

It follows a whirlwind of a weekend where Donald Trump was caught saying vulgar comments on tape and launched a surprise press conference with women who accused Bill Clinton of sexual assault.。

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While the two greeted each other on friendly terms during the first debate, shaking hands both before and after, tonight proved to be a different experience.。

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Minutes before the candidates walked out on stage, pop star Katy Perry, a vocal supporter of Clinton, tweeted just that advice.。

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Twitter noticed it immediately and knew it meant that tonight would probably be worth watching.。

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TopicsDonald TrumpElectionsHillary Clinton。