Our mission is to send a ray of hope into prison cells and camps
By regular broadcasts, first in the internet, later also by as many radio stations as possible. In all languages, on all continents.
All former prisoners confirm that the smallest message, something like "You are not forgotten" will give the prisoners hope, confidence, and the strength to survive - something they all need desperately.
Though most camps have no radio or internet, the news will eventually reach the prisoners everywhere, spread by new prisoners, good willing wardens, visitors, rumours. It did so in all Communist countries during the Cold war, in South America. It does so in Africa and in Asia. Prison walls are not soundproof.
Eventually Radio Humanity should be known everywhere, with the additional benefit of keeping the fate of these unfortunate people in the limelight, forcing governments and parliaments to do more than they do now.