In terms of changing your mind - nothing is this simple, there is a lot of nuance.
For example would you say that "Natural law" is for slaves?
If not, then the generalization of "laws are for slaves" no longer applies and we have to dig deeper. Which laws? Maybe the laws that are enforced by coercion? Is that a good definition? Probably not, we will have to dig deeper...
if the penalty for a crime is a fine, than that law only exists for the lower class