Good luck ~ they burn witches at the stake around there.
Well! You are not very clever, are you? You don’t ask directly. There are many ways of collecting DNA samples from unwilling donors. Discarded trash is one. Cigarette butts. Use your imagination.
Oh, yeah, go to Africa and tell some of those guys you want some cells from the inside of their mouths so you can test DNA ~ right~!!!!
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A smooth taking black investigator and some spending money is all it would take.
There's lots of easier ways to get it - "here, have a beer" and keep the bottle. I've wondered why someone didn't do it back in '08.