Sounds like the Human Rights Act in New Zealand, and probably lots of countries. You're not allowed to discriminate based on race, sex, age, etc. except for all

Sounds like the Human Rights Act in New Zealand, and probably lots of countries. You're not allowed to discriminate based on race, sex, age, etc. except for all the cases where people routinely do discriminate in those ways. It pretty much just encoded the existing societal norms rather than actually changing anything.