A helicopter flies low across the water at night before heavily armed figures rappel to the ground, take their positions and break down a door. It's not a trailer for a movie, a video game or a recap of a Pentagon operation. Instead, it's a video from the Department of Homeland Security showcasing Border Patrol agents at work. Despite the combative visuals, it is captioned with the Bible verse, "Blessed are the peacemakers, for they shall be called sons of God." In President Trump's second term, content is governing and governing is content. Videos like these — as well as...