This is a targeted terrorist attack it looks, more like the Las Vegas one. Not everyday gangland crime.
Chicago Sun-Times reporting 5 dead and 16 hospitalized. Gunman on the loose, no description.
https://chicago.suntimes.com/2022/7/4/23194354/highland-park-fourth-july-parade-gunfire
The fbi is getting really good at this terrorism. I trust they will eventually “find” the white guy they armed and manipulated to do the deed.