Racists took it and ran with it. I remember as a child watching racists on talk-shows like Oprah using his "N vs. black" joke as an excuse to be overtly racist and abuse blacks. It was disgusting. I felt like there was a hint of truth in that joke. Similar to how some whites like to differentiate between white vs. white trash. But to say it on a such a large, public platform, I bet he felt like he sold his soul after that.
This is asking somebody to be foward thinking. He said in the documentary that this was his baby,and it was for black people. To ask him to think ahead that White People would somehow enjoy or gravitate to this special that was not for them,is asking alot. Now that is something Pac should have been able to understand,I'm sure he didn't think people would be inspired to shoot cops to his music,not that he cared. But as a artist I doubt any of them sit there and think of all the things that could be taken out of context,or the chain reaction of harm what they say could cause. Especially in hiphop,Pac probably just thought it was divisive.
Which it is when in serious discussion,which I'm sure Pac had plenty of serious discussions on the topic of "nikkas vs black people",the poor/uneducated vs black elitist etc. But in the context of a joke it shouldn't be taken that serious,which is what Chris's point is.
The problem is not only whites,but you also see some of the black elitist clinging to that joke more than I think Chris meant,you even hear someone in the doc say Chris was speaking for a group of blacks that felt voiceless

. Chris himself is saying that wasn't his intention and he wasn't trying to take some sort of social stance.