Whose Free Speech? - a podcast by BBC Radio 4

John Gray argues that the social media bans on Donald Trump pose many risks.

"The country is already divided between political tribes that hardly speak to one another," he writes. "More than any other advanced country, American has developed a dangerously binary type of public life. "

He fears curbing free speech - in the way the tech giants have done with Donald Trump - risks threatening America's very stability.

Producer: Adele Armstrong

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