Equality of rights means that some people cannot simply impose obligations on others, for the moral agency and rights of those others would then be violated. ↗
Libertarians typically argue that particular obligations, at least under normal circumstances, must be created by consent; they cannot be unilaterally imposed by others. ↗
I went out for a film where they wanted seven brothers and one sister, so I was there for half a day while they were waiting for 'Archie' to read for a boy... I've had drivers come to pick me up in England looking for a blond, blue-eyed Scottish boy. ↗