All humans have an equal basic moral status. They possess the same fundamental rights, and the comparable interests of each person should count the same in calculations that determine social policy. — Rank Amateur
Again, I completely disagree. There is no sense in which the interests of an impulsive, violent person can be treated as on the same level as the interests of someone who goes about their life thoughtfully, without doing harm. Society could not possibly function if that were taken seriously. The impulsive, violent person has
less moral worth than the thoughtful, harmless person. They are of positive
disvalue to humanity, to society, to those around them, etc., etc., and their interests are of less account (though under certain circumstances
some of their interests may still be taken into account, see below - it's not like any human being, even the worst, is ever
totally valueless,
totally morally discountable).
There are two senses in which a
kind of equality,
in a sense, pertains to human beings, but neither of them have anything to do with morality (or rather, they aren't corollaries of the moral calculus
per se).
1) The spiritual sense, as I mentioned. For Christians, for example, all human beings are "equal in the eyes of God", or for Jews, everyone is equally a "spark of the Divine." Most religious have something equivalent. In a secular context, that might be expressed in terms of "dignity", or proportionality, or in the expression of mercy and taking into account mitigating factors, or in the understanding that moral redemption may be possible for some. But this is
DESPITE the obvious disparity in moral worth between people (it's something that under certain circumstances might
override the normal moral calculus). And again, mercy and redemption are conditional on remorse being shown.
2) Equal treatment before the law. This is really a procedural function of how to go about ensuring social order: nobody gets any special privileges, everyone comes before the law as innocent until proven guilty, that sort of thing. There is a distal connection to morality here, in that,
like every other human endeavour, the law must proceed morally (and prejudice is immoral). But it's not that the law is set up to
enforce a particular view of morality. (This is a common mistake people make. The function of the law is not to promote morality, but to propagate social order; the connection with morality is simply that in doing so it must itself act within moral bounds.) And again, this proceeds
DESPITE obvious moral differences.