Should the American flag on the moon be replaced?

No. it was America that reached it first. It is an important symbol in history for, not just Americans, but also everyone else. history should not be changed to suit political correctness. Besides there is the -international- space station, mankind as a whole is involved now. Changing the flag now would be pointless and cause unnecessary drama. The importance of landing would be lost in the new memory of replacement. There are bigger issues that the world needs to deal with before we can even consider thinking about a change. Also, what would be the point in putting a picture of Earth on the moon? Last time I checked, it would be obvious it came from Earth since there are no proven intellegent lifeforms.