Not content with a regular prosecution or a vigorous investigation, Missouri Gov. Jay Nixon said he hopes that Ferguson, Missouri, police officer Darren Wilson will receive a “vigorous prosecution” in the shooting death of Michael Brown on Aug. 9. “A vigorous prosecution must now be pursued,” Nixon said in a five minute video address posted to his website Tuesday. “The democratically elected St. Louis county prosecutor and the attorney general of the United States each have a job to do,” said Nixon, a Democrat. “Their obligation to achieve justice in the shooting death of Michael Brown must be carried out...