What was Michael Jackson's inspiration for the song Black or White?

Michael Jackson had a Skin Disease called Vitiligo. It creates iregular patches of skin that can effect the DNA to become a brighter color like white, it can happend on any part of the body. Michael is Black on the Inside but on the outside Michael is White. Michael's Oldest kid: Prince Michael Jackson has SOME vitligo just like his dad. But yeah to the real question, Michael Joseph Jackson is Black on the inside and White on the Outside. He NEVER bleached his skin.