What use do fundamental rights have if they can't guarantee the protection and advancement of civil liberties?

Civil liberties or personal freedoms are personal guarantees and freedoms that the government cannot abridge, either by law or by judicial interpretation, without due process. Though the scope of the term differs between countries, civil liberties may include the freedom of conscience, freedom of press, freedom of religion, freedom of expression, freedom of assembly, the right to security and liberty, freedom of speech, the right to privacy, the right to equal treatment under the law and due process, the right to a fair trial, and the right to life. Other civil liberties include the right to own property, the right to defend oneself, and the right to bodily integrity.

https://en.wikipedia.org/wiki/Civil_liberties