Mark Zuckerberg says Facebook will move to deter "civil unrest" after election

Driving the news: The new measures, announced Thursday, include throwing a flag on posts by candidates who claim premature victory, and forbidding new ads within a week of Election Day.

Why it matters: It's the most aggressive effort Facebook has made to date to curb manipulation in the days leading up to the U.S.

Axios has learned that Facebook, Google, Twitter and Reddit are holding regular meetings with one another, with federal law enforcement and with intelligence agencies to discuss potential threats to election integrity.

Why this matters: Way more Democrats will vote by mail than Republicans, due to fears of the coronavirus, and it will take days if not weeks to tally these. This means Trump, thanks to Republicans doing almost all of their voting in person, could hold big electoral college and popular vote leads on election night.

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