What Donald Trump has in his arsenal are the American people who have reached their wit’s end, and that is an even more formidable force A crippling defect in our national psyche makes otherwise reasoning people assume that past noble behavior or past events render some individuals immune to criticism for their current actions. This national weakness plays into the hands of those who would exploit it. By now, all should know that the Muslim father, Khizr Khan, who attacked Donald Trump at the Democratic National Convention, is a proponent of sharia law—the same Islamic law that is diametrically opposed...