How do you think the people of the earth would react if they learned that ender wiggin was the author of the book speaker of the dead?

The people of the earth would be astonished that the boy responsible for the slaughter of an entire race would become their speaker. It's almost surreal, but we always have to remember that unlike many historic figures who worked toward the annihilation of an entire race..... Ender didn't really know what he was being set up for. He speaks for those who were murdered because there's no one left to do it for them.