The insidious way violence is changing American politics — and shaping the 2024 election.

Stephen Richer should have been safe.

In early 2021, Richer was an Arizona Republican official who regularly attended local party events. At the time, he was the newly elected county recorder of Maricopa County. The job was a new level of prominence — he was now the most important election supervisory official in the state’s largest county — but going to Arizona Republican events was routine: the kind of thing that Richer, like any state politician, had done hundreds of times before.

But at one event, the crowd heckled and harassed him. When he tried to leave, they dragged him back in, yanking on his arms and shoulders, to berate him about the allegedly stolen 2020 election. He started to worry: Would his own people, fellow Republican Party members, seriously hurt him?