Don’t let Trump derangement ruin Flag Day

A UFC Freedom 250 event on the South Lawn of the White House — with a 5,000-seat temporary stadium and 85,000 tickets for viewing on massive screens on the Ellipse — has sparked controversy. The event is unprecedented, and it falls on President Trump’s birthday.Put aside what you think of Sunday’s extravaganza. There is still a good reason to embrace June 14: Flag Day.Those allergic to all things Trump should remember that Flag Day existed decades before he was born and, God willing, will endure...