According to that study, 23% approved of the statement "I approve hostile activism to drive change by threatening or committing violence". It's even higher if you only focus on 18-34 year olds.
Full report here: https://www.edelman.com/sites/g/files/aatuss191/files/2025-0...
When the rule of law is eroded, which it has been, in the US and worldwide. Then it does indeed become more rational to use violence to restore the rule of law. Unfortunately it also increases the motivation towards violence for personal gain, that makes the task of restoring the rule of law all that more difficult. Countries have spent years trying to recover that stability once it is lost.
If you subscribe to Kant perhaps, but most people's argument against violence (and morality in general) is probably not Kantian.
I think the argument for not committing violence when you are able to do so without any form of repercussion comes down to a morality issue, you don't do it because it is wrong. That works at an individual level, At a societal level you cannot assume all people to be moral. When faced with the inevitability of not all people being moral (or not agree on the same set of morals) you need a secondary reason to prevent violence. I suspect quite a lot of people would accept the morality of violence to prevent more violence. That is where individual morality might weigh in on the aspect of whether violence is appropriate to establish or protect the rule of law.