Stolen-election activists and Trump supporters have embraced a new tactic in their campaign to unearth supposed proof of fraud in the 2020 presidential race: using social media to chase down a fictional breed of fraudster known as a “ballot mule.”

Cecelia Lewis was asked to apply for a Georgia school district’s first-ever administrator job devoted to diversity, equity and inclusion. A group of parents — coached by local and national anti-CRT groups — had other plans.