Adler draws attention to Aeschines 3.241, where Demosthenes is described as 'a fellow who is a disgrace of the city'. The present four-word lemma as a whole appears as proverbial in the C15 paroemiographer Michael Apostolius (1.70); note also the scholia to Sophocles, Oedipus at Colonus 929: the phrase su\ d' a)ci/an ou)k ou)=san ai)sxu/neis po/lin there prompts the comment ai)sxu/nh de\ patri/dos poli/tou a(marti/a; and see generally Tosi [cited under alpha 378] no.258.
For disgrace cf. generally alphaiota 358, alphaiota 360, alphaiota 361, alphaiota 362.