For those unfamiliar with this picture, it shows a groundbreaking medical procedure to correct a spina bifida condition in utero. The doctor removed the uterus from the mother, operated on the fetus, and re-inserted the uterus back in the mother. The surgery was successful.
In the midst of the surgery, the baby's hand reflexively grasped the doctor's finger.

Whatever your views of abortion, I think you'll agree the hand grasping the doctor's finger is NOT a blob of protoplasm, as the pro-abortion proponents would have us believe. Blobs of protoplasm don't grasp fingers. It is a living human being in there, not yet ready to face life. It's easy to see why the pro-lifers adopted this picture to rally for their cause.
Here's some additional information on the surprising controversy surrounding the photo.