This episode is all about the personal vendetta from Captain Sisko against Mr. Eddington. His former chief of security who has betrayed him and committed treason against Starfleet by joining the resistance- group called the Maquis.
Here we really get to see the dark side of Sisko. But the writers have taken this too far by letting Sisko fight a very dirty fight, if you can even call it a fight. A Starfleet Captain would never do this and if he would his crew should refuse to cooperate. It's an exciting episode and i like the analogy with "Les Miserables" so i won't give it a one, but this is not something i would like to see more of in Star Trek. It just doesn't fit the Star Trek philosophy at all. There are other ways to make an exciting story that do fit.