The line between church and state was nowhere to be found at Sunday's service, which drew masses of Charlie Kirk followers. A capacity crowd filled Glendale’s State Farm Stadium on Sunday, with thousands of people shut out of the 63,000-seat venue and directed to overflow seating at the nearby Desert Diamond Arena. Then, in both venues, they sat through a more than five-hour marathon of unapologetic Christian nationalism in honor of Charlie Kirk, the Arizona-based right-wing activist who was murdered on Sept. 10 at a college event in Utah. Christian nationalism is both a political and religious ideology that seeks...