When I say problem I don't mean it in a negative sense. I'm just saying that its one of the moral dilemnas that the PCs will face when they confront this scenairo. They must respect the rights of Federation citizens but they have to balance it with their own moral code...do "rights" give people the right to kill themselves or virtually doing it anyway...by being assimilated, the personality is completely subsumed and hence the person is "dead".
Suicide is illegal in most nations although suicides are rarely prosecuted because they are usually mentally unstable anyway...and counselling is mandatory not voluntary.
Anyway the point is that the PCs have to make the cultists see the error of their ways without a blatant violation of a citizen's fundamental rights.
Arise, arise, Riders of Theoden!
Fell deed awake: fire and slaughter!
Spear shall be shaken, shields be splintered,
a sword-day, a red-day, ere the sun rises!
Ride now, ride now! Ride to Gondor!
Theoden King: The Return of the King