Interesting you ask about his grandfather.
Of course we only have The One’s side of the story in his book, but he does reveal that after working for the Brits his grandfather always wore British-style clothes as opposed to tribal dress and became very precise and demanding (after the British manner), as opposed to the laidback and lackadaisical ways of the Luo. And his grandfather went to Burma during WWI and served there with the British Army.
So it is not at all clear that the grandfather even shared the Obamessiah’s resentment of the British, or didn’t think he gained more than he suffered by having associated with the British colonial regime for so many years.
Barry seems to enjoy finding reasons to be angry and resentful. Not sure how much stock I’d put in either of his bio’s.
My ancestors were Irish .. suppose I really should have an anti-Brit grievance going. But I don’t resent what they did in the past, I resent what’s going on today.