Kristin Mink, a sixth-grade teacher at Sidwell Friends School, was eating lunch with her 2-year-old son at a restaurant in Washington, DC, when she noticed Environmental Protection Agency administrator Scott Pruitt sitting three tables away. “He’s corrupt, he’s a liar, he’s a climate change denier, and as a public servant, he should not be able to go out in public without hearing from the citizens he’s hurting,” she wrote in a Facebook post shortly after deciding to confront him.