Bill-
"And, to answer the claim that practitioners of genocide could ALSO claim that they were acting in good faith because they "considered members of group B to be sub-human.."....I can only shake my head at the stretching of definitions that lets anyone even suggest that the status of a fetus is comparable to that of a group of living humans who can talk, argue and be objectively shown to have as much 'humanity' as their oppressors."

I happen to agree whole-heartedly with you--but I fail to see how you're willing to respect their opinions. Or them, for that matter.