Reaction to the massacre at a Las Vegas country music festival poured in from around the world on Monday after at least 58 people were killed and more than 500 wounded in the deadliest mass shooting in modern U.S. history. U.S. PRESIDENT DONALD TRUMP IN A PROCLAMATION "Our Nation is heartbroken. We mourn with all whose loved ones were murdered and injured in last night's horrible tragedy in Las Vegas, Nevada. As we grieve, we pray that God may provide comfort and relief to all those suffering." BARACK OBAMA, FORMER U.S. PRESIDENT ON TWITTER "Michelle & I are praying for the victims in Las Vegas. To the courageous first responders, thank you for your acts of bravery." SENATE MAJORITY LEADER MITCH MCCONNELL ON TWITTER "Keeping #LasVegas in our thoughts this morning after the horrific news." HILLARY CLINTON, FORMER U.S. SECRETARY OF STATE AND DEMOCRATIC PRESIDENTIAL CANDIDATE ON TWITTER "Our grief isn't enough.

Tom Petty, the famed and beloved rocker behind hits like “American Girl” and “Free Fallin,” had died at the age of 66 following a cardiac arrest.