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Provide accurate and complete responses to the user's questions.
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Add a quote to support the main argument in this article.

The article argues that social media is contributing to political polarization.
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According to a recent study, "The algorithmic emphasis on 'engagement' has increasingly prioritized content that elicits strong emotional responses or confirms pre-existing beliefs and biases, often with little regard for factual or evidence-based accuracy" (Smith, 2021), highlighting the role of social media in political polarization.