Bob, I totally agree with you...so those types of songs should have never made it to number #1. Actually to my opinion they didn't belong in the charts in the first place. But I will give a true fact, Metal dominates the world...but you never see them in the charts, why? Because a small majority of people deem it offensive, violent & demographic to religion, culture, race & ***.
You might prove me wrong and say what about Metallica & Pantera? They are possibly the only two who had a privilledge to even have a glimpse. Other than the so called nu breed of hardcore metal bands such as Fear Factory, Slipknot and Mudvayne.