#9. Child Sacrifice
During the late winter month called Atlcahualo, the Aztecs would bring children to the temple of Tlaloc (the god of rain and lightning )and force them to walk up the steps. The children were not willing volunteers, and they wept as they went up. If the children cried, the Aztecs believed that Tlaloc would bless them with rain. So if the children did not weep on their own, the adults would make them. After that the children were brought into a cave outside of town. They were laid in a circle under an open roof. There, under the open air, the rain brought about by their sacrifice would drizzle down upon their bodies.
Article sources: latinamericanstudies.org , ancient.eu , en.wikipedia.org