Get along? Apparently no—at least until after 2020. Two examples summarize why. “We don’t need any more brown faces that don’t want to be a brown voice,” said U.S. Representative Ayanna Pressley (D-Mass.), one-quarter of “the squad” sowing havoc among Democrats in the House. “ We don’t need black faces that don’t want to be a black voice. We don’t need Muslims that don’t want to be a Muslim voice. We don’t need queers that don’t want to be a queer voice.” Of the Republican Party, MSNBC anchor Chris Hayes said the other day: “It must be peacefully, nonviolently, politically...