“For me, he’s an anarchist and a free spirit. He knows that there are parallels between him and his enemies because life is never stable – you always have to fight for it. Keeping in mind that it may never be boring and that nobody is obliging you to behave like a superhero and to always have your muscles flexed and bulging.”--Bale
That's probably one of the more interesting takes on the character I've heard in a while, and it's definitely the first time I've ever heard Batman described as an anarchist, which I think is actually pretty accurate. It blurs the line between the characterizations of Joker and Batman even further.
The overarching theme of this series seems to be about these chaotic men (Batman, Ra's, Joker, Bane) destroying the establishment in an attempt to reshape it into their own ideal. Even though, weirdly enough, Bane and Ra's want to destroy it in order to establish a totalitarian society, while Bruce and Joker seem to want to give it back to the people. Bruce and Joker just have different ideas of what would happen once they did that.