The rivalry between Real Madrid and Barcelona extends far beyond “El Clasico” matches, which rank among the most intense and politically charged matches in world soccer. The two La Liga clubs are also the most-followed sports franchises on social media, both well clear of third-placed Manchester United. The Los Angeles Lakers have the most followers of any U.S. team but are outside the top 10 on the overall list. With such extensive global fanbases, both Real and Barca choose to operate X accounts in a variety of different languages — but there was a notable divergence in their output Monday. Barca marked Feb. 19 as the International Day Against Homophobia in Sport, an awareness day that has been particularly well supported in Spanish-speaking countries for around 15 years.