In 1855 Orestes Brownson explained how, since Calvinists teach the utter depravity of nature, from this follows the conclusion that only the elect have rights; those not in a state of grace can be dispossessed or treated with contempt - which is how all Calvinist societies have operated.
Calvinism begins by denying all natural rights, nullifying nature, and therefore all natural liberty, and asserts rights for the elect only.
... writes Brownson.
For the "elect" substitute "those in power" and you have the Calvinism of today.
Our modern nihilists are simply Calvinists in Calvin Klein jeans.
For the moderns, since life has no meaning, man has no dignity. It is the Catholic Church that insists upon the dignity of man, made in the image and likeness of God, whether in the womb or out of it - and insists upon the meaning of life.
By contrast, the modern Calvinists - the narcissistic nihilists around us - see rights resulting from power only. If you enough power to have a solid claim to life, you have a right to keep it; if you don't, or if you prove useless to someone who has more power than you, you have no rights.