Yesterday on the interstate, I drove past a huge truck with enormous pictures of an aborted ten-week fetus (or so the text indicated) plastered all over it. It was for an organization called www.abortionNO.org, which says on its website that its mission is "graphically exposing the injustice of abortion." In other words, grossing out people in the hopes of evoking a visceral response.
Yes, it was a pretty disgusting image. But a removed tumor would be just as gross, and I wouldn't want to see a huge image of that on a truck, either. Emotional appeals are what you pull out when you're unable to make a solid logical argument.