Murdering that CEO will not bring those people back, it will not make the world a better place, and it will not make you the better person. All it will do is make more people afraid to work in the healthcare field, and increase the anxiety of those currently covered by United Healthcare. How do you his successor won't be just as bad if not worse?
I suppose you think all the school shooters in America were justified in their actions because they were bullied so much that the only way to stop those bullies was by murdering them, right?