What does 2 Kings 23:6 mean?

He took the Asherah pole out of the Lord’s temple, brought it outside Jerusalem to the Kidron Valley, burned it, crushed it to dust, and threw the dust on the graves of common people. 2 Kings 23:6 - Modern Text Bible

(Josiah destroys the Asherah pole, a symbol of idol worship, and treats it with total contempt, even scattering its remains on graves.)