Korean martial arts remain widely practised among the Korean community of Argentina, and have also made significant inroads in the rest of society. In addition to "taekwondo", which has a following in numerous countries, the globally less-common "shippalgi" is quite well known in Argentina, practised actively by more than 70,000 people. Its growth largely resulted from the 1970 immigration to Argentina of Yoo Soo-nam, one of the world's foremost masters in the art. The efforts of Yoo, who taught "shippalgi" at the Colegio Militar de Campo de Mayo from 1971 until 1980, resulted in its adoption by the Special Operations Group of the Federal Police.