>How many male caucasians are working in Southeast Asia underwear manufacturing plants?
Even those Asian manufacturing plants are mechanized and to the extent they do have items individually handled it is not going to be by caucasian males.

Race to a geneticist is a very complex issue but surely this 'dna in the panties' is the ONLY case in history where a female is found raped and murdered and everyone goes to such great lengths to explain away male dna found on her corpse.