Park, Ill., on July 4, 2022, after a shooter fired on the Chicago
   northern suburb’s Fourth of July parade.
   (Brian Cassella / Chicago Tribune via Associated Press)
--
   the 21-year-old gunman accused of fatally shooting seven people and
   injuring dozens more at a Fourth of July parade in the Chicago suburb
   of Highland Park. Robert E. Crimo III drew police attention three years