You apparently don't even understand the difference between morality and ethics. Slavery was moral within systems that allowed/perpetuated it. Slavery was a regulated practice under christian states, for instance, where treatment of slaves was dictated by moral decrees of the church. The ETHICS of slavery has not changed, but humanity's MORAL understanding of it has. Just as the MORALs of capitalist societies favour rich people and provide a different justice system for them, or the morality of patriarchal societies favour men. The ETHICS of justice are very different than the MORALs of justice. The ETHICS of humanist discourses (through the enlightenment era) were why feminism and anti-slavery/social rights movements were able to flourish in the first place, despite the overwhelming MORAL systems that defined the oppression of the eras that came before (and continue to persist). Ethics are dependent on philosophy, which can, and does, have roots in human moral understandings of the world, and not all ethical models agree on the scope of ethics, but ethical models are based on logic, not feeling (as much as human cognition allows, anyways). The implementation of emergent ethics and morality into justice system apparatus' is the process through which societies regulate what they consider as morally good. Women's suffrage, for instance, was a battle that was fought using ETHICAL arguments to recognize women as human to overcome their place within a system of MORALITY that denied women that standing. Just as the MORALITY of spousal rape, or even rape more broadly, has been integrated into the justice system as MORAL wrong because of pressure from feminist scholars, who broadly have used ETHICAL arguments to see such change occur. That you don't understand that considering a hierarchy, a governmental system, property rights, etc., as "good" or "bad" is inherently a moral consideration is all the evidence anyone should need to see that you don't have an even basic grasp on theories of ethics or morality. You don't know what any of these terms mean and sound like you watched a video, or listen to the occasional feminist podcast as your entire intelectual education. I thought you were being disingenuous, but it turns out you're just dumb.