That wouldn't work. There are many people who hate anyone famous and think they are responsible for bad things. They would all use that defense. This includes people who seem obviously good to you.
"Anyone famous" in the vast, vast majority of cases is completely detached to the cause of anyone's death or further suffering as a health insurance CEO would be.
Yes but now you’re already bringing in a judicial review of the specific people and circumstances involved. You might as well have a regular homicide investigation.