I think about how ahead of her time was Sinead O'Conner [when she said "fight the real enemy"](http://en.wikipedia.org/wiki/Sin%C3%A9ad_O%27Connor#Saturday_Night_Live_performance) and tore up a picture of the Pope.

Like most, I didn't really understand at the time what she was on about.  That act really had a huge impact on her career.