By Marco Cacciati Brazil’s recent move to block Elon Musk’s X, the popular social network formerly known as Twitter, has reignited a global debate on free speech – and its limits. The ban, stemming from court action and upheld by a Supreme Court panel earlier this week, followed Musk’s refusal to appoint an X representative in the country and block accounts accused of spreading disinformation. The legal saga began in April, when Supreme Court Justice Alexandre de Moraes instructed X to take down a number of accounts owned by right-wing personalities associated with former president Jair Bolson…