I don't mean "human rights", which has a question already. I suppose that not all rights are human rights, though that may not be the case: I think people may actually have a right not to be lied to, but I don't think it is a violation of my human rights to be lied to (perhaps by my government).
I assume Kant thought that all rights are inviolable, because all duties are absolute and do not conflict.
Does anyone who can couch (perhaps even in part) their meta-ethics in terms of "rights" claim that some rights can forfeited? At face value, I have a "right" to basic freedoms, to non-coercion, but criminals and the insane seem to forfeit those. Supposing I do have less duties to them, does that mean that not all people have equal weight in our moral judgments?