It's very common to become the thing you hate, but then, isn't that the entire point?
Evil is nesscarey, the only way you can stop evil is with evil, you just have to have enough motivation on the right-side to make yourself the "lesser evil".
All that peace and love crap doesn't work, like earlier "an eye for an eye makes the world go blind" yeah, Gandhi said that, and look how much he accomplished, JACK SQUAT. Commies and terrorists still dominate, tibetian monks are another example, they refuse to fight, so what do they do? They run like scared little girls, while the soldiers of China hunt down thier families and put a couple rounds through thier head, and if they find the monks, do more of the same.
That's where peace gets you, you can call that better all you want too, but this isn't some fictional book, it's real life, and in real life, it's not about the message, it's about the results, live to write another page, or die in the first half, that's our only choice in this life.