After the horrific mass murders in El Paso and Dayton, the Democrats immediately blamed President Trump. Blaming Trump, or any politician or public figure, is both intellectually irresponsible and socially divisive. As this unsigned editorial in the New York Sun points out, the motivations that spur these mad killers arise from both the left and right, including concerns about environmental degradation, as in Dayton and Christchurch, and fears over immigration, as in El Paso. We need to accept the grim truth that whatever our political leanings, the blame for these crimes attaches entirely to the killers.