פירוש על איכה 2:2

[Every] residence of Yaakov. The houses of Yaakov,⁵Referring to the exile of the ten tribes; and ‘the fortifications of the province of Yehudah’ refers to the exile of the Dovidic dynasty, and thereby ‘He desecrated the kingdom, etc.’ an expression of a dwelling place.⁶From the root נוה; referring to the 480 learning institutions in Yerusholayim. (Eichah Rabbah 2:4)

Razing them to the ground. He lowered them to the ground.

He has desecrated the kingdom and its princes. These are the Israelites, who were called, “a kingdom of kohanim.”⁷Shemos 19:6.