One of the country’s most cherished footballers, and one of its most irritating right-on social media commentators, Gary Lineker, has been at it again. In a post on X on Friday night the former Barcelona striker declared his support for their arch-rivals Real Madrid in the Champions League final. Why? Because, citing an account that monitors politics in football, Madrid’s opposition, Borussia Dortmund, recently signed a three-year sponsorship agreement with the weapons manufacturer Rheinmetall, a firm that sells arms to Israel.