A referee tries to separate two cocks fighting during a Cock fighting tournament on December 3, 2016 on the outskirts of Antananarivo, Madagascar. Cockfighting is held during the week end and is a tradition with asian roots still practiced in Madagascar. (Photo by Gianluigi Guercia/AFP Photo)

A reveller plays with tomato pulp during the annual Tomatina festival in Bunol, near Valencia, Spain on August 29, 2018. As every year on the last Wednesday of August, thousands of people visit the small village of Bunol to attend the Tomatina, a battle in which tons of ripe tomatoes are used as weapons. This year, a total of 145 tons of ripe tomatoes will be thrown between more than 22,000 participants. (Photo by Heino Kalis/Reuters)

Fighters Feather “The Hammer” Hadden (L) and Allie “Babydoll” Parks compete during “Lingerie Fighting Championships 21: Naughty 'n Nice” at the Robinson Rancheria Resort & Casino on June 18, 2016 in Nice, California. Hadden won the bout. (Photo by Ethan Miller/Getty Images for LFC)

A woman takes part in a four-minute flash mob pillow fight at the Old Town Square in Prague, Czech Republic, December 22, 2016. (Photo by David W. Cerny/Reuters)

Lawmakers from the main opposition Republican People's Party (CHP) and ruling AK Party (R) scuffle during a debate on a legislation to boost police powers, at the Turkish Parliament in Ankara, Turkey, February 19, 2015. (Photo by Reuters/Stringer)

Jazmin, 6, sister of Jose Luis, receives Isoniazid Preventive Therapy in Carabayllo in Lima, Peru July 14, 2016. At least 30,000 Peruvians are infected with tuberculosis, an ancient disease that killed 1.8 million globally last year, more than AIDS-related and malaria deaths combined. Partners in Health, a Boston-based non-profit that works with Peru's health ministry, offers a simple solution. It trains community volunteers to tend to tuberculosis sufferers in their homes – ensuring patients take medicine daily and helping them navigate the public health bureaucracy. (Photo by Mariana Bazo/Reuters)

Warriors from the Suri tribe in Ethiopia still stage the savage “Donga” battles – even after many fighters have been died from their injuries. Donga stick fights take place after the harvests, the Surmas count days owing to knots on a long stem of grass or jags on the trunk of a tree dedicated to that specific use. Here: A tribeswoman sporting a huge lip plate and wearing a skinned animal carcass on her head. (Photo by Eric Lafforgue/Exclusivepix Media)