evidence: The Long Simmer of Political Violence in America [...] For the past several years, American politics have heated to a rolling boil. Members of Congress have been shot, an intruder attacked the House speaker’s husband in their home with a hammer, and a mob stormed the U.S. Capitol on January 6, 2021. Political violence is not new. Yet this weekend, when former President Donald Trump was shot at during a rally in Butler, Pennsylvania—an apparent assassination attempt that left one person dead and two others injured—it felt as if the kettle had boiled over. [...] Harris: Adrienne, you’ve reported recently on the sort of rise of political violence in America.