Stone Throwers Living Inside a Glass Cage

Been drawing this at school during class in my little sketchbook, finished it today and decided to touch up the background in GIMP 2 considering the surrounding paper was quite a mess. Done with colored pencil and pen.

I might do a short series of similar drawings soon, just an idea. EDIT: Made a sort of follow up drawing here [link]

Also the title is inspired by a Johnny Hollow song here --> [link]