"And he [Josiah] defiled Topheth, which is in the valley of the sons of Hinnom, that no one might burn his son or his daughter as an offering to Molech." 2 Kings 23: 10
Yes, there were Hebrews in Judah who sacrificed their children to the pagan god Molech. This is one of the most disgusting and heart wrenching examples of why God ordered his people not to interact with the people of the land of Canaan. By the 6th century B.C., even the Temple in Jerusalem was adorned with idols dedicated to the Ba'al and the Ashe'rah. In the valley of the sons of Hinnom, children were sacrificed to a god by people who often publicly professed their faith in the Lord God in the Temple.
This continues today. Countless millions of innocent children continue to be sacrificed on the altar of Molech, only now the altar is an abortion house and the priests pretend to be doctors. The idols of legalism, consumerism and egoism have combined to replace Molech; but the outcome is still the same. Children are being sacrificed for a supposed benefit to those who offer them up.
This must stop.