The grounds of objection differ in the respective cases: one concerns racial identity; the other concerns behavior thought to be morally problematic. Racial identity is an immutable trait and a complaint about mixed-race marriages necessarily involves a complaint about immutable trait. Sexual behavior is not an immutable trait and it is possible to object to same-sex marriages based on the behavior which would be involved in such marriages. Objections to mixed-race marriages necessarily involve objections over status, while objections to same-sex marriages could involve objections over behavior. Therefore, the two cases are not analogues since there is a significant modal difference in the ground of the objection.