Captain America, Iron Man, and registering people

from Conventional Folly:
So Spencer Ackerman recently sided with Iron Man over Captain America in the “should superheroes have to register in order to practice their superherodom” debate. In case that was too complicated: He thinks they should have to register. Ezra Klein agreed, but added another element to the mix: “If the state has any legitimate function at all, it’s to train and regulate people who could accidentally kill everyone in a hundred-mile radius.”