A handshake that lasted barely a second has thrust Lamine Yamal back into the centre of an online storm. The Barcelona forward, still only 18, was filmed offering Princess Leonor and Infanta Sofía the briefest of greetings during Spain's World Cup celebrations at the Zarzuela Palace.
The clip has attracted more than 2.7 million views as of this writing, and Yamal's every gesture, or lack of one, is being picked apart by strangers thousands of miles away. What should have been a routine royal reception has instead reopened a familiar argument about respect, culture and what is owed to whom.