1929 Apr. 463/2 A certain woman organizer regularly hurled the name of ‘class traitors!’ at the young women who were responsible for unionizing their fellow workers.
1966 20 Aug. 43 Morgan has no cures for society so he opts out, even if his Mum does call him a class traitor.
1997 I. Sinclair (1998) 91 They're class traitors, flaunting behaviour you'd expect from a lowlifer, a boho, an unreconstructed writer.