That's sort of what makes it bizarre - but I have no idea about racial politics in Germany or where it would come from.

I guess, racism is never "funny" when turns against you...
This is true. Lots of the Southerners who made fun of black or Hispanic or Asian recruits in the squadbay had the nerve to get butthurt over cracker incest jokes. Rather amusing in the end.

It would be great to have a non-racist population or military, but I doubt we will ever get there.