Wiktionary
soap boxes
n. (soap box English)
Usage examples of "soap boxes".
Hardfaced men -- the agitators who had been prominent in the trouble from the first -- mounted soap boxes at street corners, and began to label Aunt Nora as a sinister woman, and Doc Savage a murderer and worse.
He has no vested interest in turning those people into soap boxes or apologists.
Battery and light were stored away in a couple of soap boxes, and the boys brought them out and set them on the cabin table.
Farther back was a bunker made of soap boxes, the peak of a helmet visible just above it.