I like your concepts, but there are some parts of your rhyme that just don't flow well together to me. Like the part where you go...

'I just wanted to see it fall - people and all
Coz the evilness calls me to perform deeds that leave people in morgues
I'm a butt head - ask Beavis, he seen it before.'
It just didn't seem to flow right together. Mabye it's just the way I read it. Nah mean? Keep workin'.... Peace...