A long and documented history of discrimination (are you wanting me to go through and dig up all the articles about individuals engaged in underage relationships and how they can't find housing, are sent to jail, how folks will plaster neighborhoods with fliers with their faces on them, attack them at their homes, etc?) based on an immutable characteristic (going by your idea of what makes an "immutable characteristic", this would seem to apply to anyone's sexual preference) leading to undue economic and social hardship (again, need me to go pull all those newspaper articles about trying to find housing, going to jail, etc.?) and loss of basic civil rights (again, going to jail, etc.).