Surely this past Sabbath’s sermons have ringed out in unison, as we approach the Ninth of Av: We lament the "sinat chinam," the baseless hatred, and hope that perhaps our stiff-necked people can unite over a simple common wish for peace among brethren. How many religious classes have we sat in, how many lectures and blog posts decry our own inner turmoil as a people: "It was baseless hatred for...