It was meant to be a glitzy Saturday night at a Washington ballroom featuring President Donald Trump, but the glamour was shattered by gunshots that left guests diving to the floor and the US leader bundled out by security personnel. Trump was seated on the dais at the White House Correspondents’ Association’s annual dinner – the first time he is attending as president – when loud bangs disrupted the revelry and caused him and others on stage to look up in alarm. Video captured by news outlets...