The Senate voted to apologize for slavery on June 18. The House apologized last summer. The first family -- descendants of Africans, of enslaved Africans and of slave-holders -- visited a slave fort in Ghana. These were historic occasions, and they occasioned the kind of hue and cry that always accompany the subject of slavery and whether we still need to reckon with it. I believe we do need more reckoning, and a little more love and a little more logic would help that process. Logic first: There's this quasi-math problem in which things don't add up. Many African-Americans naturally...