In a video posted to social media, the Facebook founder announced that the company would be eliminating fact checkers, which he said had been “too politically biased.” Instead, Meta plans to implement a “community note” system similar to that of Elon Musk’s X.

After visiting President-elect Donald J. Trump in November, Mr. Zuckerberg decided to relax Meta’s speech policies. He asked a small team to carry out his goals within weeks. The repercussions are just beginning.