This is The Poynter Report, your daily guide to the news about news. Subscribe to get it in your inbox every weekday. Critics had already braced for an uneasy White House Correspondents’ Dinner, with President Donald Trump in attendance and organizers opting for a safer, less confrontational program. But the night took a far more serious turn when a security incident abruptly cut the event short. ​​Shortly after 8:30 p.m., less than 20 minutes after Trump, first lady Melania Trump, Vice President JD Vance and other officials took their seats, loud bangs echoed through the ballroom. Video from inside the room — broadcast live and quickly shared on social media — shows the moment: heads turning toward the doors, the first lady visibly startled and security moving swiftly to surround the president as attendees ducked under tables. With few details and no immediate explanation, the mood shifted almost instantly from ceremony to confusion to reporting.…