Michael Brown: Missouri governor activates National Guard A 30 days state of emergency has been declared throughout the US State of Missouri ahead of an eminent decision on whether to file criminal charges against a white police officer Darren Wilson who shot dead a black teenager. The governor of the US State of Missouri, Jay Nixon, who activated the state's National Guard in a statement, said the guards will support efforts to maintain peace. A panel is deciding whether to charge Police Officer Darren Wilson who shot and killed a black teenager Michael Brown in August this year. No specific date for the jury's decision has been given. Brown's death set off protests in the area. Ferguson Police and other law enforcement agencies have been criticised for being heavily armed and using excessive force during protests. BBC