The mother of a 24-year-old man who was fatally shot outside a Near West Side housing complex by a security officer received $3.6 million from a Cook County jury.The jury awarded $4.8 million to Ulisa Howell-Darby, the mother of Eric Knox, who was found to be 25% negligent.The case is Ulisa Howell-Darby v. Kates Detective & Security Services Agency and was decided Oct. 1 before Circuit Judge Marguerite A. Quinn.Howell …