Respect for persons and cultural relativism

 Belief in respect for persons means that culture does not determine morality, because in many cultures, including our own during the days of black slavery, we approved of practices that did not accord with respect for persons. Segregation would be another example.

A Christian Defense of Transgender Identities

 Here. Though I think most transgendering these days is the result of gender ideology and trigger-happy medical professionals who think all cases of gender dysphoria require a change of gender. I think medical science will get over this fad.