Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Nervous anticipation extends far beyond the racially charged powder keg of Ferguson, Missouri, over a grand jury decision on whether to indict a white police officer for fatally shooting an unarmed black teenager. The St. Louis suburb has simmered with anger since the day in August when 18-year-old Michael Brown was shot multiple times by Officer Darren Wilson. With the grand jury expected to deliver its decision any day, people worry that tensions could boil over -- not only in Ferguson, but at demonstrations in more than 30 cities from Boston to Los Angeles organized by a group called the Ferguson National Response Network, mostly for the day after the decision is announced.Cities around the country anxiously await grand jury decision in Ferguson caseGroup calls for demonstrations in more than 30 cities from Boston to Los AngelesLaw enforcement agencies prepare to respond 
 Question:The imminent decision has renewed concerns over clashes between protesters and heavily armed law enforcement officers, especially if _ is not indicted.

Darren Wilson