The taking down of the walls of Jerusalem is telling when you place it next to Psalm 122:7 (see also Lamentations 2:8 and Lamentations 2:18). One of the first things that was taken on by the Judeans after the return from exile was the rebuilding of the walls of Jerusalem (Nehemiah 4:1 – 7:73). For the importance and the meaning of the walls of Jerusalem, see also Isaiah 60:10 and Isaiah 60:18.
10 And all the army of the Chaldeans, who were with the captain of the guard, broke down the walls around Jerusalem.