News nearly immediately spread on Twitter last night that Ferguson, Mo., police officer Darren Wilson wouldn’t be indicted for shooting and killing 18-year-old Michael Brown, with the tweeted word moving across the nation and abroad.

St. Louis County prosecutor Robert McCulloch began addressing reporters in the courthouse in Clayton, Mo., just after 9 p.m. EST. As this map shows, in the minutes leading up to McCulloch’s announcement of the grand jury’s decision, and as looting and violence erupted in the St. Louis suburb, mentions of #Ferguson and “Ferguson” exploded on Twitter up and down the East Coast and in the Midwest.

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