Phoenix,
whilst I strongly condemn racism, I must add that further to your above post, the term "Kill Turks" is NOT racist. . . It is merely an interjection.
Now to say "Kill Inferior Turks". . . THAT would be racist.
I take your point (though I guess that you meant to write "injunction" not interjection), but that is a bit of a sophist argument. Killing is not good for the health and wellbeing of the target. The target here is clearly stated as being 'Turks', not anyone else. Turk here is used as a racial category. To say 'Kill Turks' is, definitely on that score, racist.
If the poster had said "Kill everyone" then there'd be no racial element to this ! If the poster had said 'Kill inferior Turks' then that would presumably leave superior Turks safe and therefore the target would not be Turks per se, as a racial category, but "inferiors' who happened to be Turks. What about 'inferiors' who were not Turks, would they be safe ?
Ah. Semantics, semantics.