The Oxford English Dictionary defines 'victim' as variously:
A living creature killed and offered as a sacrifice to some deity or supernatural power;
Applied to Christ as an offering for mankind;
A person who is put to death or subjected to torture by another; one who suffers severely in body or property through cruel or oppressive treatment;
One who is reduced or destined to suffer under some oppressive or destructive agency;
One who perishes or suffers in health, etc., from some enterprise or pursuit voluntarily undertaken;
In weaker sense: One who suffers some injury, hardship, or loss, is badly treated or taken advantage of, etc.
None of these, to my mind, suggests passivity or meek acceptance of their lot. An animal who is to be killed will struggle and fight; those who are oppressed will fight. Rather, the definition of victim suggests a subject who has overwhelming power stacked against them.
The tortured could bring about an end to their torture; bound, restricted and wounded as they are, however, it would stop a lot more quickly, and a lot more effectively, if their torturer realised what they were doing and stopped.
A powerful metaphor there.