UN Secretary-General warns that hatred and xenophobia "spread at the speed of a click" The King has called on Europe to "reaffirm and unite even more forcefully and decisively" Felipe VI made this appeal on Tuesday, during his speech at the delivery of the Carlos V European Prize to the UN Secretary General, António Guterres. The event coincided with Europe Day, which is celebrated every 9 May, and was attended by the Emperor Charles V, the Prime Minister of Portugal, the President of the Regional Government of Extremadura, the High Commissioner for Foreign and Security Policy.