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Esther Vargas / Flickr cc

Twitter CEO Jack Dorsey doesn't buy critics' arguments that his company gives President Trump a huge platform to blast out often-controversial tweets, he said on NBC News' "Sunday Today with Willie Geist" that will air Sunday.

I believe it's really important to hear directly from our leadership. And I believe it's really important to hold them accountable. And I believe it's really important to have these conversations out in the open, rather than have them behind closed doors. So if we're all to suddenly take these platforms away, where does it go? What happens? It goes in the dark. And I just don't think that's good for anyone.

Censorship claims: Meanwhile, Mashable reports that Donald Trump, Jr. accused Twitter of censorship after one of his tweets was not visible to some. "I don't think there is anything remotely controversial or offensive about the truth here and yet it seems @twitter decided to at least partially censor the tweet," Trump Jr. wrote in his Instagram caption about a tweet about an Obamacare news story. As Mashable explained, Twitter users can flag potentially inappropriate tweets and Twitter staff will review the content and decide if it requires a warning message — which appears to be the process playing out in this case.

Go deeper

Officials warn 5 key tech sectors will determine whether China overtakes U.S.

Illustration: Aïda Amer/Axios

U.S. intelligence officials responsible for protecting advanced technologies have narrowed their focus to five key sectors: artificial intelligence, quantum computing, biotechnology, semiconductors and autonomous systems.

Why it matters: China and Russia are employing a variety of legal and illegal methods to undermine and overtake U.S. dominance in these critical industries, officials warned in a new paper. Their success will determine "whether America remains the world’s leading superpower or is eclipsed by strategic competitors."

3 hours ago - Health

Pfizer says COVID vaccine over 90% effective in kids

Photo: Michael M. Santiago/Getty Images

Pfizer and BioNTech said their COVID-19 vaccine was more than 90% effective at protecting children between the ages of 5 and 11 from symptomatic infections from the virus, according to a study posted online by the FDA Friday.

Why it matters: Pfizer is seeking an emergency use authorization to vaccinate children — one of the last groups of Americans still largely ineligible to receive a coronavirus vaccine.

Changing the inflation conversation

Illustration: Annelise Capossela/Axios

Inflation looks like it’ll run hot for longer than plenty of smart people thought it would. The conversation over just how much more Americans will have to pay for their stuff has taken on a new intensity, as supply problems show few signs of fading.

Why it matters: The rate of price growth has remained consistently strong in recent months — a time that some thought would bring cooling prices after an initial reopening spike. What goes on with prices will influence the decisions made by Congress, the Biden Administration, and the Federal Reserve.