[Aquinasfan]

Evil is the violation of individual rights to their persons and property.

Why? Says who?

If you disagree, you must offer a better definition of properly ordered human sexuality.

Boxing is disordered and unnatural, as I have explained many times using your own argument.

Obviously, you don't have a better definition.

[steve-b]

Evil is the violation of individual rights to their persons and property.
Why?

Because it is "unnatural" and "disordered". By your own argument, you must accept this as the final word on the matter.