Joseph R. Biden has just taken the oath of office as the 46th president of the United States.

"This is America's day. This is democracy's day," proclaims @POTUS @JoeBiden in inaugural speech. "At this hour, my friends, democracy has prevailed."

"I know the forces that divide us are deep and they are real," says @POTUS.

#Twitter hasn't quite figured out this transition of power thing.

Meanwhile, over on @Facebook...