State institutions are not inherently violent (unless we're asserting that humans are inherently violent, though doing so makes the distinction pointless).
They are. It's just hidden. The reason why people don't speed is because the end result of speeding (in a legitimate society) is having your wages garnished or your property seized or being jailed. Now, we have an
incredible deterrence, so this is mostly invisible. But, the end, the fact that 'the state' will deprive you of liberty is the enforcement mechanism. And this enforcement is not available to the regular citizen. *I* cannot take your car away. I cannot arrest you for driving without insurance. But, it's what will happen if you decide to not obey the speed limit.
Same with the enforcement of debt. You refuse to pay your mortgage, you will eventually get removed from your house. The bank cannot do it. Your neighbour cannot do it. It's the state that will do it. The state gets to basically never use true violence because of the deterrence effect.
People think of taxes as state violence, but it's not true. Well, in the modern era anyway. Taxes are charged
after you've made use of the services provided by the country to earn money. If you go into a restaurant and eat a meal, you don't then claim 'violence' when the bill comes. If you go into a country and earn money by using its infrastructure and citizenry and court protections, then you owe. You owe AFTER you made the money by taking advantage of what's offered by the citizens of the country.
In our modern era, taxes aren't state violence, because they're essentially voluntary. You only owe after you trigger them. But they're sure a good deal when it comes to preventing violence. If the citizens were to say "El_Mac gets no protections from the courts or justice system", I can assure you that it wouldn't be 'the state' that would then deprive me of liberty and property. By analogy, if the bank put the contents of a safety-deposit box outside on the front sidewalk (because the person failed to pay rental fees), it wouldn't be 'the bank' that ended up taking the stuff. I get a pretty good deal for paying taxes, and they're only due AFTER I've earned by taking advantage of the already existing economic infrastructure.