"Cro[w] Mag" refers to some large and stupid[1] bird[2] such as the Cardinal of the Catholic Church;
"Non-Man" refers to sub-human.
Jew is Cro-Magnon Man.
Question - - Art thou Cro-Magnon Man.
[1]Stupid means criminally lacking of common sense.
[2]Bird refers to a wide-eyed species.
/Nathan