There isnt a secret group of evil lizard people planning out society. The evil in our society comes from the ways our oppressive systems shape people.
Our culture and systems believe(or at least act like) it is perfectly fine for a police officer/rich person to do murder/social murder.
So many people base their morals on what is legal/what the state penalizes, meaning if a police officer’s or ceo’s actions result in the death of innocent people, it is perfectly okay because they never get in any real trouble. This normalization of violent/oppressive acts done by the state and the rich means that more police (and more rich people) are going to feel okay doing shitty things.
Nonviolent action has accomplished many things, it is just that nowdays the ruling class is mostly desensitized to protest. If you want to change society through nonviolent action, your action needs to convince others to support you. You need to convice the ruling class and all who help them to give in to your demands.
Modern day peaceful protests do nothing because they dont have any credibility. The rich rightfully believe that they can ignore you and nothing else will happen. Nonviolent protests are just one way to send a message, and I think the most important thing that this ceo killing has done for us is that it sent a message.