According to Wikipedia, hydatidiform moles are caused by inviable (abnormal) eggs implanting in the uteral layers, rendering a previous viable, normal pregnancy abnormal. Usually the abnormal egg has no chromosomes and it gets the chromosomes form a spermium and undergoes chromosome duplication.
At conception, the “egg” now has a soul. It got implanted in the uterus… but then an abnormal one comes, and turns the pregnancy into an abnormal process which can turn into cancer.
We should invent a protection against moles, because they kill innocent human beings. The protection should include a ban on abortion, as according to Wikipedia, there is a score 1 risk of hydatidinoma (hydatid + carcinoma) in womens having an abortion. Plus, antecedent molar pregnancies can cause this kind of cancer.