COPENHAGEN, DENMARK - OCTOBER 31: Queen Margrethe of Denmark is greeted by her son Prince Joachim (L) and Princess Benecdikte (C) together with Crown Prince Frederik and Crown Princess Mary during her arrival to the Parliament to the Parliament to celebrate the 500 years anniversary of the Reformation on October 31, 2017 in Copenhagen, Denmark.  (Photo by Ole Jensen - Corbis/Corbis via Getty Images)