I own a few old KRS1 albums,
He is one of Raps founding fathers, And there are plenty of songs where he questions the morals and ideals of our society, which is OK to do in our society, but his comments about 9/11 while vile and disgusting are his oppinions.
I remember a few of his songs, they start with ALLAH AKBAR! Truthfully, I'm being serious. I never thought anything of it except for the fact he might be a Muslim. I doubted he was, remember the Muslim Religon was very popular in the Rap Culture in the 90's. And a lot of Musicians, tried to capitlize on the Muslim Religion to sell records.
Good Rip and Paste, Rip.
As for being a role model, KRS One, had his time. He was very popular when I was first started listening to Rap, and that was the late eighties, Ask your average child under 15, and they'll prolly tell you they never heard of him.