If this is accurate, 50,000 years ago is way before the origin of exploiting/ed and oppressing/ed classes.
CB ^^^^^^ Archery http://en.wikipedia.org/wiki/Archery Beginnings The earliest concrete evidence of archery is 50 tya <http://en.wikipedia.org/wiki/Tya> [1] <http://www.engin.swarthmore.edu/~jsarmie1/History.html> . The bow probably originated for use in hunting, and was then adopted as a tool of warfare. Bows eventually replaced the atlatl <http://en.wikipedia.org/wiki/Atlatl> as the predominant means for launching projectiles. Archery was practiced in antiquity on every continent except Australia, demonstrating that it is both basic and versatile.
