Douglas Robinson, 57, was shot to death on February 18, 2019, at Tent City, a homeless encampment on state-supported property in Chicago’s South Loop. The shooting happened about 4:45 p.m. on a grassy embankment near the 1000 block of South Desplaines Street after an argument with another homeless man. Robinson suffered a single gunshot wound to his torso, was taken to Stroger Hospital and pronounced dead; the autopsy ruled the death a homicide.

Police arrested 57-year-old George A. Arroyo, who also lived in the encampment, and charged him with one count of murder on February 19, 2019. Prosecutors said the dispute stemmed from a disagreement over a propane heater; Arroyo was held without bond. Residents remembered Robinson as kind and helpful and noted his baby blue bicycle decorated with colored Christmas lights, which earned him the nickname Lite-Brite man.

What information do readers have about Robinson, Arroyo, or Tent City that could help clarify what happened that afternoon?