This is simply a display of religious hatred and misinformation. But the religious celebration is performed at the beginning of May, not 4 days later. There was a full moon on the evening of May 5. However, Satanists do not hold rituals at the time of full or new moons. He is referring to ancient Christian propaganda about child sacrifice, dating back to the Witch burning times.
Children sometimes die during Christian exorcisms.
But these are accidental killings. We have been unable to find evidence that any children have been intentionally ritually murdered in the United States in this century by followers of any religion. He testified that there were three victims, and the number three had significance in occultism. We believe that the number 3 has no particular significance among Satanists. Wiccans sometimes refer to the three aspects of their Goddess, but the number 4 is much more important to them.