Cooperation is such an Orwellian word if you ask me.

It is said that if someone did what a rapist, robber, murderer "asked"
them to do under thread of or use of violence, that the victim cooperated.

But can you speak, in such a situation, of a cooperation between the people (in that group)?

I speak of cooperation more as people working together for mutual benefit....without forcing, or threads or violence on each other. But that is of course my opinion which would lead into the territory of definitions so I won't go any further.