After one mentally disturbed man shoots up a porn theater and another is shot dead in a Batman costume, a shopkeeper is shown inspired by the Batman to save a woman from a mugger. Bats can be a force for good, even when he's not present.
Right before the blackout and subsequent riot, a priest was being annoyed by the music of a teenager dressed similarly to the Mutants. The teenager later saves him, and stays to help the wounded until morning.
The majority of the citizens of Gotham seem to get a mass one of these once charismatic leaders (such as Gordon near his home, and then Batman for the entire city) rally them to focus on the greater good.
Superman's internal monologue, as he's just gotten pretty messed up due to a nuclear bomb, about how even though he's an alien, he considers Mother Earth his true home, culminating in the line "Your adopted son shall honor you."
After Superman and Batman fight, and Batman appears to have died due to a heart attack, Superman holds a broken and battered Bruce Wayne, remorseful for 'killing' his former friend, and snarls at the nearby soldiers "Don't you touch him." I find that Frank Miller's DKR version of Superman (not to be confused with the version written after Frank Miller went nuts), written as an Anti-Villain, is actually the most human and believable version of Superman I've read.
At the very end, where Bruce Wayne thinks to himself: "This is a good life. Good enough." If you've read the whole comic, you'll get it.
