Utilitarianism theory would argue that even a person who does not think rights and liberties should be protected because they are inherently worthwhile might argue that they should be protected because

The rights that the nature has provided to the humans are the rights of the person which must be protected which includes freedom of speech, free to travel, generating new thinking in people that benefits people at large and many other benefits can be drawn.

Explanation:

Just take the example of the person who directed the Blue Planet on CNN who was of the opinion that the plastic must be banned because it is the biggest source of pollution we are generating in human history. So the climate change campaign got strength from that phase and today we see every organization is moving towards sustainable operations.