One principle that unites the Trump-era Republican party: hating its foes

Donald Trump has just finished a speech at the country’s biggest annual gathering of conservatives, and outside in the hallway a group of young men are debating where they agree and disagree with the president. There’s disagreement about his use of executive orders; his trade policies; his handling of the travel ban; his habit of using the presidential bully pulpit to pressure private businesses; his views on foreign military adventurism; and aspects of his style.