whether they knew of didn't know is not the main issue; the main issue is whether a man is innocent because he didn't know. (...) by beating himself on the chest and proclaiming, "My conscience is clear! I did not know! I was a believer!" Isn't his "I did not know I was a believer!" at the very root of his irreparable guilt?
Milan Kundera, The Unbearable Lightness of Being
ethics