To learn that one’s grandfather flew a bombing mission over Dresden in the Second World War is one thing; to hear that he killed five little girls and their mother with a shovel is another. We can be sure that he would have killed more women and girls by dropping bombs from pristine heights, and they are likely to have died equally horrible deaths, but his culpability would not appear the same. Indeed, we seem to know, intuitively, that it would take a different kind of person to perpetrate violence of the latter sort.
