Anthony Grimes kneels on a rain-soaked street as he blocks traffic with other protesters Sunday, Nov. 23, 2014, in St. Louis. Ferguson and the St. Louis region are on edge in anticipation of the announcement by a grand jury whether to criminally charge officer Darren Wilson in the killing of 18-year-old Michael Brown. (AP Photo/David Goldman)

PHOTOS: Ferguson on edge

Ferguson and the St. Louis region are on edge in anticipation of the announcement by a grand jury whether to criminally charge officer Darre…