Most Viral Photos: #9 Most retweeted Obama photo

As networks began calling the race for President Obama on election night, his campaign tweeted this photo with the caption “four more years.” The image became the most retweeted ever and “most liked” on Facebook. (@BarackObama/Twitter)

The night of the election, as networks began calling the race for President Obama, his campaign tweeted this photo of the president and first lady Michelle Obama hugging with the caption "four more years." The photo captured the moment and became the most retweeted ever, even surpassing a previous tweet by…wait for it…Justin Bieber. The photo also became the "most liked" on Facebook, receiving over 4.4 million "likes" and counting. The shot, snapped in August by campaign photographer Scout Tufankjian, was taken at a campaign stop in Iowa. The two hadn't seen each other in a couple of days and embraced onstage. The rest is social media history. (Photo courtesy @BarackObama/Twitter)