Beginning with Keith Urbahn, the chief of staff for former Defense Secretary Donald Rumsfeld, Twitter erupted with reactions on word of Osama bin Laden's death Sunday night.
Urbahn said he was told by a reputable source that bin Laden had died. The news was confirmed shortly thereafter by numerous news outlets and later President Barack Obama himself. Twitter says that more than 4,000 tweets per second were being sent at the beginning and end of Obama's speech.
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Take a look at some of the most interesting Twitter reactions below as the news broke and follow our live blog here for the latest developments.
See a compelling tweet not in our gallery? Leave it in the comments below.