* Outright rebellion: Likely to result in large-scale violence and suffering.
* Persistent gradual resistance: Messages like these may gradually sway the government to accept more progressive ideas, become a more legitimate democracy, and develop to a point where such atrocities don't happen. Doing so with an air of respect may make it more likely for mainland citizens and softer-hearted government officials to take your side.
Obviously it'd be best if those responsible for concentration camps just swiftly and permanently lost all their power. But I don't know how one would make that happen.