How can it be that Obama, who has known Wright for 20 years, not know of Wright's views?

How is it possible that a minister who brought Obama, a religious skeptic, to faith not be his spiritual mentor(or of sorts), especially when Obama attended only one church?

Obama might agree with Wright or he might not agree, but Obama cannot now know Wright!

Obama, or his campaign, or both did not have it in them to go on the offense. Only recourse was to vilify the pastor.

How is this any different from the Clintons?

Who will Obama vilify next?
I remember his wife saying that she is proud of America for the first time (you see, the truth does not matter)
I remember his wife also saying "the race situation - that is America" ( you see the context does not matter)