Of course. English is the de facto lingua franca of science, by publishing your work in an obscure language you pretty much guarantee its dissemination and impact will be reduced to the point where valuable and useful work may be wasted, because it is not widely read and discussed. It's completely pointless to publish in languages other than English outside very narrow fields where you expect no broad interest anyway.
I don't think studying sexual and violent crime among immigrants or certain social or ethnic group is racist, btw. It's obsurantism to claim so. But, on the other hand, the methods and assumptions of such studies need to be scrutinized with greater care than usual, assuming bias until proven otherwise (by confirming the methodology is sound).
I don't speak Korean though.