The recent shootings at the homes of Minnesota state lawmakers, which have left two people dead, are a "grim milestone" in the ongoing history of American political violence. That's the assessment of analyst Riley McCabe, who helped compile a comprehensive report on that subject released in late 2024 by Washington think-tank the Center for Strategic and International Studies (CSIS). The shootings saw Democratic House Speaker Melissa Hortman and her husband, Mark, killed by gunfire at their Brooklyn Park, Minn., home on June 13. Democratic state senator John Hoffman and his wife, Yvette, somehow survived despite reportedly being shot several times...