Benjamin Steffen of Switzerland fences Anatoily Herey of Ukraine in the men's Epee semifinal during the International Fencing Tournament - Aquece Rio Test Event for the Rio 2016 Olympics at Arena Carioca 3 in Olympic Park on April 24, 2016 in Rio de Janeiro, Brazil.
#RIO2016 Russia's Aida Shanaeva competes against France's Ysaora Thibus during…
I Learned To Fence From America’s First Olympic-Bound Hijabi Athlete
Day 1: Fencing - Women's Individual Epee - Nathalie Moellhausen of Brazil
Brazil's Nathalie Moellhausen (L) competes against US Kelley Hurley during their…
Sofya Velikaya of Russia, left, and Ibtihaj Muhammad of the United States compete in a women's team sabre fencing semifinal at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 13, 2016.
China's Liu yongshi competes with Hungary's Edina Knapek during a women's foil individual table of 32 fencing match at the Rio 2016 Olympic Games in Rio de Janeiro, Brazil, on Aug. 10, 2016. http://infoseekchina.blogspot.com/2016/08/weekly-xinhua-photos-aug-8-aug-14.html
RIO DE JANEIRO, BRAZIL - AUGUST 07: Daniele Garozzo (L) of Italy competes with Alexander Massialas (R) of the United States on his way to winning the Men's Individual Foil Final on Day 2 of the Rio 2016 Olympic Games at Carioca Arena 3 on August 7, 2016 in Rio de Janeiro, Brazil. (Photo by Alex Livesey/Getty Images)
#RIO2016 Best of Day 1 - Nathalie Moellhausen of Brazil in action against Lauren Rembi of France during the Womens Individual Epee Quaterfinal on Day 1 of the Rio 2016...
From fencing to swimming, basketball to tennis, athletes have found themselves roundly booed in Rio. While boos have been heard at most Olympics - despite the idea that it's a time when sportsmanship should reign - it's already clear that Rio is noisier than any other recent Games. Here are six types of booing already heard in Brazil.