RIO DE JANEIRO — A Brazilian Supreme Court panel has upheld the decision of one of its justices to block billionaire Elon Musk’s social media platform X nationwide, according to the court’s website.
The broader support among justices deals a blow to Musk and his supporters who have sought to characterize Justice Alexandre de Moraes as a renegade and authoritarian censor of political speech.

The panel is comprised of five of the full bench’s 11 justices, including de Moraes, who last Friday ordered the platform blocked for having failed to name a local legal representative, as req …