Facebook has banned former US president Donald Trump from its platform for two years, saying he deserved the maximum punishment for violating its rules over a deadly attack by his supporters on the US Capitol.
Mr Trump responded by calling the ban an "insult" to voters, renewing his false claims that the 2020 presidential election was stolen from him.
"Facebook's ruling is an insult to the record-setting 75 million people, plus many others, who voted for us in the 2020 rigged presidential election," Mr Trump said in a statement.
"They shouldn't be allowed to get away with this censoring and silencing, and ultimately, we will win. Our country can't take this abuse any more!"
The two-year ban will be effective from 7 January, when Mr Trump was kicked off the platform, and comes after Facebook's independent oversight board said the indefinite ban should be reviewed.
"Given the gravity of the circumstances that led to Mr Trump's suspension, we believe his actions constituted a severe violation of our rules which merit the highest penalty available under the new enforcement protocols," Facebook vice president of global affairs Nick Clegg said in a post.
Facebook also said it will no longer give politicians blanket immunity for deceptive or abusive content at the social network based on their comments being newsworthy.
At the end of Mr Trump's two-year ban, Facebook will enlist experts to assess whether his activity at the social network still threatens public safety, according to Mr Clegg.
"If we determine that there is still a serious risk to public safety, we will extend the restriction for a set period of time and continue to re-evaluate until that risk has receded," Mr Clegg said.
When Mr Trump's suspension is lifted, he will face strict sanctions that could rapidly escalate to permanent removal from the social network for rule-breaking, said Mr Clegg.
"We know today's decision will be criticised by many people on opposing sides of the political divide," Mr Clegg said.
"But, our job is to make a decision in as proportionate, fair and transparent a way as possible, in keeping with the instruction given to us by the Oversight Board."
Last month, the independent oversight board said Facebook was right to oust Mr Trump for his comments regarding the US Capitol assault, but that the platform should not have applied an "indeterminate and standardless penalty of indefinite suspension."
Mr Trump was suspended from Facebook and Instagram after posting a video during the attack by his fired-up supporters challenging his election loss, in which he told them: "We love you, you're very special."
The panel gave Facebook six months to justify why his ban should be permanent - putting the ball in company chief Mark Zuckerberg's court and spotlighting weaknesses in the platform's plan for self-regulation.
Mr Zuckerberg has stressed his belief that private companies should not be the arbiters of truth when it comes to what people say.