Brian Cohee II, a 19-year-old Colorado man with a history of mental health issues, was found guilty of the first-degree murder and dismemberment of 69-year-old homeless man Warren Barnes. The trial explored Cohee's mental state, with conflicting expert testimony on whether he could distinguish right from wrong. Despite his defense's arguments of insanity, the jury found him guilty. Cohee's motive appears to have been a desire to commit murder, targeting a vulnerable individual he believed would not be missed. The case highlighted the tragic loss of Barnes' life and the complex interplay of mental illness and criminal culpability.