Jackson stopped the attack after battering Mixon to the ground amid shouts for him to stop by other mid-morning CTA riders.
In closing arguments Thursday, George Jackson talked to the jury for more than hour and claimed his brother was defending himself when he beat Mixon because Mixon had stared at him.
Only one of the three defense witnesses called to the stand offered testimony to establish those claims as fact.
George Jackson also became the subject of a protective order sought by the state’s attorney’s office, after he sent what the office said were threats and inappropriate messages — including a bouquet of flowers — to prosecutors.
George Jackson was frequently been hours late to hearings, or missed court dates entirely.