Meta CEO Mark Zuckerberg offered a sharp critique of the fact checkers on his social media platforms last week, saying he will no longer use them because they were too politically biased and undermined public trust. That didn’t sit well with Alexios Mantzarlis at Cornell Tech. Mantzarlis is the former founding director of the International Fact-Checking Network, where years ago he helped set up Meta’s fact-checking program. On POLITICO Tech, Mantzarlis joins host Steven Overly to offer a rebuttal to Zuckerberg.

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