I am not sure what it means - but the reference to trying to 'explain' what his songs "mean" suggests to me that this shit is more insidious than the Nazi propaganda. With the nazi propaganda - at least you know what it means, you can take it literally and argue with it. With this rap-crap shit - you never know: they spew Nazi-like hatred and bigotry, wrap in a form that is much more appealing to the public than Nazi harangues - and then when you protest its obnoxious content - they say it was a joke or a metaphor not be taken literally.
I am apalled that anyone with a trace of decency (not to mention developed political consciousness) buys this crap, let alone trying to defend it.
wojtek