Demosthenes, Against Timocrates 164 (See the Scaife Viewer for the full text)
“These men have committed so much horror beyond their own criminal behavior that even while running a so-called democracy they turned each person’s house into a prison and put the police in our homes.”
οὗτοι τοίνυν τοσαύτην ὑπερβολὴν ἐποιήσαντο ἐκείνων τῆς αὑτῶν πονηρίας ὥστ᾿ ἐν δημοκρατίᾳ πολιτευόμενοι τὴν ἰδίαν οἰκίαν ἑκάστῳ δεσμωτήριον καθίστασαν, τοὺς ἕνδεκ᾿ ἄγοντες ἐπὶ τὰς οἰκίας.
W. E. B. Du Bois, The Souls of Black Folk 9
“For such dealing with criminals, white or black, the South had no machinery, no adequate jails or reformatories; its police system was arranged to deal with blacks alone, and tacitly assumed that every white man was ipso facto a member of that police. Thus grew up a double system of justice, which erred on the white side by undue leniency and the practical immunity of red-handed criminals, and erred on the black side by undue severity, injustice, and lack of discrimination.”
“Who will police the police?”
Quis custodiet ipsos custodes?