What do we call the potential of a person or a group to contest and change norms, values, institutions, and structures of power?

Agency

Explanation:

An agent is free to act in a certain way he or she chooses and is usually aware of his or her actions and the goal that action aims to achieve.

Agency is the ability of an individual or group to interact with social structures and the freedom to contest and make changes if necessary.

An agency may be individual or collective (where two or more people make decisions together as a group).