PHILADELPHIA (CBS) — It is the deadliest shooting in modern U.S. history.

Related: Singer Jason Aldean Describes ‘Horrific’ Las Vegas Shooting

At least 50 people were killed and 400 injured, officials say, as a gunman unleashed bullets at an outdoor music festival in Las Vegas on Sunday night.

The entire world is reacting to the tragic event, including current and former Philadelphia athletes and teams.

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