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How the world is coming together following Paris attack

02:09

Paris residents warmed the Internet's collective heart Friday night by using the hashtag #PorteOuverte, or "open door," to offer shelter to strangers left stranded after at least six deadly attacks sent the city into chaos. A few hours later, people across the U.S. returned the favor with a hashtag of their own: #StrandedinUS. TODAY’s Harry Smith reports.