http://www.nbcolympics.com/news-blogs/fencing/controversial-ending-in-second-semifinal-of-womens-epee.html

At 3:00 ET Shin was escorted off the piste in tears, with the crowd booing the official by her side while simultaneously cheering for the heartbroken competitor.

경기장 나갈때 야유는 심판진을 향한 것라고 하네요