The social issues they talked about were mirrored in his life.
Ignorant wisdom is questionable, as it’s contradicting, but sort of understandable in rap: philosophy in slang and etc. It could also be referring in this case to “street smarts,” or the type of wisdom that one can achieve without the use of higher education (college, university, etc).
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Zion is the name of her first born son and refers to the Rastafarian code word. The song is about his conception and birth, which occurred despite heavy pressure from music business folks around her to terminate the pregnancy because of possible effects on her career.