tbf, a billionaire right in front of you isnt that scary even if thats what you're afraid of, its the abstracted effects of their power and actions. A billionaire right in front of you in the flesh is something you can physically harm with your own two fists alone, a widespread system is not.
How about a billionaire in some sort of bulletproof pope mobile surrounded by an army of security who all happen to be people who didn't qualify to become cops?
You can ensure he does something actually funny, like choking on his own blood or twitching as his nerves missfire due to severe blunt force trauma. Look ma its a retarded Nazi, can I kill him please.
Before anyone gets pissy about me using retard im qouting a real old and kinda shitty joke, just swap nazi with puppy and kill with keep.