Obviously it takes having his mask removed to turn Wayne's fear into something tinged with more anger. The whole sequence poses the question: in a post-apocalyptic future where Superman's totalitarian elite force rules why would there be any need for a costume? If anything, all Batman is doing is making himself a target, when he's presumably supposed to be blending in or outright hiding. No issues with wearing bullet proof armour, obviously, but a big rubber mask is just asking for trouble.