The story in the book of Exodus is really about one of the very first revolutions against value transference. According to Exodus, Pharaoh enslaved the Hebrews and made them build his cities and monuments. But the Jews decided they had enough, and not only did they escape, they slew every firstborn Egyptian male and destroyed all of Pharaoh’s army in the process. This was proper and just punishment for value transference.
Apparently killing the children of a nation for the actions of its leaders is proper and just to Jews like "Halfsigma".