That's not meant as a rhetorical question.  I've spent the past 10 minutes on Google trying to sort through all the spin to find the actual words Wright used that are a matter of such controversy, and I can't find anything so egregious that it would require any "explaining" on Obama's part beyond "we disagree."

 From what I've seen, it appears Wright could be fairly characterized the same way Derbyshire (unfairly) characterized Obama: "Blame whitey, and raise high
the red flag of socialism."  I don't agree with that philosophy.  I find it to be paranoid, superficial, economically silly, and overly radical--but I also don't think it's "hate."  From what I've seen, Wright doesn't seem so extreme that a politician should be vilified for simply associating with the man.  

But as I already said, I haven't found many good primary sources.  If anyone has a clip or transcript of Wright saying things that are truly hateful or racist--rather than merely too liberal for your taste--please leave a comment with a link (for God's sake, don't just copy paste without giving a source).

--Z