In today’s newsletter: After the dramatic events of Saturday night, White House security arrangements are under scrutiny and political violence is once again in the spotlight Good morning. On Saturday night the annual Washington ritual of the White House correspondents’ dinner descended into chaos as the US president and first lady were evacuated after the event was interrupted by gunfire. Journalists ducked under tables as authorities rushed Donald Trump and members of his cabinet out of the room. The president and his wife were unharmed, and a suspect is in custody – identified as Cole Tomas Allen, a 31-year-old man from southern California. In today’s newsletter, I will bring you the latest updates on what we know about the incident. First, the headlines.…