Growing up in Bucks County, Isaac Saul felt like he was at the epicenter of the American political spectrum — a bellwether county in a bellwether state that is, as he puts it, the most important place to be during presidential elections. He recalls CNN interviewing parents outside his high school, Pennsbury, during election season, and having friends and family members whose views were widely disparate. “I thought that was normal,” he says.

That started to change about 10 years ago. “I witnessed firsthand and experienced online that these groups of people that used to disagree with each other, but could sit around the table and have dinner or share a beer or whatever, became incapable of sharing space together,” Saul recalls. “It was like a religion, adherence to these views, and they wer

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