I get that gun violence is an awful thing and people's first instincts are to say 'well even he didn't deserve to be shot' but I need to make it clear that even if Hitler hadn't killed himself and the soviet soldiers had found him alive and shot him, that would still have been just and good, sometimes the only way to remove evil people from positions of power where the entire system is designed to protect them, is with violence.
A health insurance CEO was never going to suddenly have a Scrooge moment and decide to undo all the pain and suffering he'd caused, and he was going to continue collecting paychecks written in the blood of cancer patients and miscarriage victims and everyone who died of a preventable disease. His job was to cause people to suffer and die to save his company money, it wasn't an undeserved end for scum of his type
This was a person who made the active decision to reject as many claims as possible for medical assistance, claims that would have saved the lives of children, teachers, mothers, he went into work each day and actively worked to cause as many people a long, painful death as he could to add an extra 0 to his bonus. There is no redeeming that. You need to understand that he was an enemy of the working class, not some great, stand up guy, he knew he was killing people, he knew.