So, Humanity came out. Generally good episode, quite fond of this Zatanna (and hoping she'll be allowed to come back), but rather disappointed by the fates of certain characters.
Mind you, there is the fact that they're robots, and Red Tornado was connected to them, so he could have backed up their software. So that fate could be rendered non-permanent in a plausible manner.
Is it just me, or does it seem like some people in the JLA are playing Magnificent Bastard games, not only with the Team, but with other JLA members? Black Canary's expression at some points, among other things, is something of an indicator.
EDIT: Just an FYI: The year on the flag doesn't necessarily mean that the date on the flashback is 1939, as those flags were simply not taken down. The 1939 World's Fair was still the 1939 World's Fair in 1940 and after, because it opened in 1939.