Thousands of spectators came out to the Washington, D.C.'s President's Park Thursday night for the 93rd annual National Christmas Tree Lighting ceremony, led by President Obama's family.

After lighting the tree, the president took a moment to remember the 14 people killed and 21 others who were injured in Wednesday's San Bernardino attacks.

"Their loss is our loss, too. We're all one American family, we look out for each other in good times and in bad. They should know that all of us care about them this holiday season," Obama said.

The first family and attendees were bundled up for the windy night's lighting festivities that included a visit from The Muppets' Miss Piggy and performances by a variety of artists including Aloe Blacc and Fall Out Boy.

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