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Minneapolis' new Community Safety Commissioner Cedric Alexander issued an apology Friday for the "tone" of his replies on Twitter during a heated exchange with residents, but did those tweets violate city social media policy? The city says it is "reviewing the situation."

Elon Musk buys Twitter in $44 billion deal

Elon Musk reached an agreement to buy Twitter for roughly $44 billion on Monday, promising a more lenient touch to policing content on the platform where he promotes his interests, attacks critics and opines on a wide range of issues to more than 83 million followers.