It is interractive as the viewer can select a small wooden head and then watch as it tumbles down a staircase of metal rods and plays a tune until it comes out in the bottom tray. You then put the head into the bull horn and start over again. I've done a bit of reworking on the piece recently. It's a non-partisan piece, but I did notice when taking the photos that it did lean a little bit to the "right".
....(please click on the image to see a larger version)