Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Members of the media participate in a demonstration against physical attacks on journalists during a week of protests, in Barcelona, Spain October 22, 2019. The placard reads "Stop agressions". REUTERS/Jon Nazca

Roosters fight during a cockfight in Port-au-Prince, Haiti, December 15, 2018. REUTERS/Andres Martinez Casares

Bulls engage in a head-to-head fight as they are displayed for sale at a livestock market where people buy sacrificial animals ahead of the Eid al-Adha celebrations in Sanaa, Yemen August 18, 2018. REUTERS/Khaled Abdullah

A demonstrator throws a bottle at the police outside the Congress after senators rejected a bill to legalize abortion, in Buenos Aires, Argentina, early August 9, 2018. REUTERS/Marcos Brindicci

People queue, to receive information about sexist agression on the fourth day of the San Fermin festiva,l in Pamplona, Spain, July 9, 2018. REUTERS/Vincent West

Two Herens cows lock horns during the qualification round of the annual "Battle of the Queens", a traditional Swiss cow-fighting competition where cows test their strength and fight for the herd's leadership, in Aproz, Switzerland, May 6, 2018. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY

Roosters fight during a match with the highest cash reward of cockfighting in Thai history for more than one million USD at a stadium on the outskirts of Bangkok, Thailand, February 18, 2018. REUTERS/Athit Perawongmetha

A guard dog is pictured in a cage at the Forbidden City in central Beijing, China February 12, 2018. Picture taken February 12, 2018. REUTERS/Jason Lee

A guard dog waits to attend a daily training session at the Forbidden City in central Beijing, China February 12, 2018. Picture taken February 12, 2018. REUTERS/Jason Lee

A guard dog waits to attend a daily training session at the Forbidden City in central Beijing, China February 12, 2018. Picture taken February 12, 2018. REUTERS/Jason Lee

Bulls fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Bulls fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Bulls fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Bulls fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Villagers watch a bull fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Bulls fight during the Maghesangranti festival, which commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days, at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2018. REUTERS/Navesh Chitrakar

Carte de l’Inde présentant le nombre de crimes à l’encontre des femmes commis par Etat en 2015 et répartition des agressions, crimes et outrages à la pudeur depuis 2011

Two Herens cows lock horns during the qualification round of the annual "Battle of the Queens", a traditional Swiss cow-fighting competition where cows test their strength and fight for the herd's leadership, in Aproz, Switzerland, May 7, 2017. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY

Two Herens cows lock horns during the qualification round of the annual "Battle of the Queens", a traditional Swiss cow-fighting competition, in Aproz, Switzerland May 7, 2017. REUTERS/Denis Balibouse

Roosters check each other at a house yard in Villa Nueva, central region of Ciego de Avila province, Cuba, February 13, 2017. REUTERS/Alexandre Meneghini SEARCH "CUBA COCKFIGHTING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Rooster are seen during a fight at a cockfighting arena on the outskirts of Ciro Redondo, central region of Ciego de Avila province, Cuba, February 12, 2017. REUTERS/Alexandre Meneghini SEARCH "CUBA COCKFIGHTING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Rosters fight during a cockfight at an area on the outskirts of Ciro Redondo, central region of Ciego de Avila province, Cuba, February 12, 2017. REUTERS/Alexandre Meneghini SEARCH "CUBA COCKFIGHTING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Roosters fight at a cockfighting arena in Moron, central region of Ciego de Avila province, Cuba, February 16, 2017. REUTERS/Alexandre Meneghini SEARCH "CUBA COCKFIGHTING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Two cocks are trained for a fight in a village in Nakhon Sawan province, Thailand January 10, 2017. REUTERS/Chaiwat Subprasom

Two cocks are trained for a fight in a village in Nakhon Sawan province, Thailand January 10, 2017. REUTERS/Chaiwat Subprasom

Two cocks are trained for a fight in a village in Nakhon Sawan province, Thailand January 10, 2017. REUTERS/Chaiwat Subprasom

Two cocks are trained for a fight in a village in Nakhon Sawan province, Thailand January 10, 2017. REUTERS/Chaiwat Subprasom

An activist of Ukrainian womens' rights group Femen participates in a protest at the Kiev Pechersk Lavra monastery in Kiev, September 11, 2014. The group was protesting against the Ukrainian Orthodox Church of the Moscow Patriarchate, which supports Russian agression in Ukraine, Femen activists said. REUTERS/Valentyn Ogirenko (UKRAINE - Tags: SOCIETY CIVIL UNREST RELIGION POLITICS CONFLICT)

Activists of Ukrainian womens' rights group Femen stage a protest at the Kiev Pechersk Lavra monastery in Kiev, September 11, 2014. The group was protesting against the Ukrainian Orthodox Church of the Moscow Patriarchate, which supports Russian agression in Ukraine, Femen activists said. REUTERS/Valentyn Ogirenko (UKRAINE - Tags: SOCIETY CIVIL UNREST RELIGION POLITICS CONFLICT)

Activists of Ukrainian womens' rights group Femen stage a protest at the Kiev Pechersk Lavra monastery in Kiev, September 11, 2014. The group was protesting against the Ukrainian Orthodox Church of the Moscow Patriarchate, which supports Russian agression in Ukraine, the Femen activists said. REUTERS/Valentyn Ogirenko (UKRAINE - Tags: SOCIETY CIVIL UNREST RELIGION POLITICS CONFLICT TPX IMAGES OF THE DAY)

Passengers look at a train service information board at the Marseille's train station October 6, 2011. Railway traffic in France is disrupted after a SNCF ticket controller was stabbed on a Lyon to Strasbourg train resulting in employees who have stopped work. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: TRANSPORT CRIME LAW)

A train service information board announces service disruptions at the Marseille's train station October 6, 2011. Railway traffic in France is disrupted after a SNCF ticket controller was stabbed on a Lyon to Strasbourg train resulting in employees who have stopped work. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: TRANSPORT CRIME LAW)

A train service information board announces service disruptions at the Marseille's train station October 6, 2011. Railway traffic in France is disrupted after a SNCF ticket controller was stabbed on a Lyon to Strasbourg train resulting in employees who have stopped work. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: TRANSPORT CRIME LAW)

Passengers look at a train service information board at the Marseille's train station October 6, 2011. Railway traffic in France is disrupted after a SNCF ticket controller was stabbed on a Lyon to Strasbourg train resulting in employees who have stopped work. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: TRANSPORT CRIME LAW)

Commuters look at a train service information board at the Marseille's train station October 6, 2011. Railway traffic in France is disrupted after a SNCF ticket controller was stabbed on a Lyon to Strasbourg train resulting in employees who have stopped work. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: TRANSPORT CRIME LAW)

Pachuca striker Luis Gabriel Rey of Colombia leaves the field after his team's loss against Cruz Azul during the Mexican league championship soccer match in Pachuca City, Mexico November 14, 2007. The stadium Hidalgo was empty after the Mexican Soccer Federation imposed a ban due to agression towards a referee during the last match by Pachuca fans. REUTERS/Henry Romero (MEXICO)

Cruz Azul's defender Joaquin Beltran (R) heads the ball past Pachuca midfielder Marco Ivan Riego during their Mexican league championship soccer match at the Hidalgo stadium in Pachuca City, Mexico November 14, 2007. The stadium Hidalgo was empty after the Mexican Soccer Federation imposed a ban due to agression towards a referee during the last match by Pachuca fans. REUTERS/Henry Romero (MEXICO)

A general view of the Hidalgo stadium is seen during the match between Pachuca and Cruz Azul at the Mexican league championship soccer match in Pachuca City, Mexico November 14, 2007. The match was played without fans after the Mexican Soccer Federation imposed a ban due to agression towards a referee during the last match by Pachuca fans. REUTERS/Henry Romero (MEXICO)

Club America forward Lucas Castroman (R) and DC United midfielder Ben Olsen (2nd R) confront each other after an agressive play on the ball in the second half of their SuperLiga soccer match in Washington July 29, 2007. REUTERS/Jonathan Ernst (UNITED STATES)

A visitor looks at a painting at the Museum of the War of Chinese People's Resistance Against Japanese Agression in Beijing April 6, 2007. The war may have ended more than 60 years ago, but in this Beijing suburb gaggles of schoolchildren and office workers daily relive battles the Chinese fought with Japanese invaders so long ago. Premier Wen Jiabao flies to Tokyo on Wednesday, the first time a leader of China has visited its eastern neighbour and bitter wartime adversary in seven years. Picture taken April 6, 2007. REUTERS/Claro Cortes IV (CHINA)

Japanese Internet venture company Livedoor Co. President Kozo Hiramatsu adjusts his glasses during a news conference at the company headquarters in Tokyo February 13, 2006, after the company's former chief Takafumi Horie was indicted by prosecutors. Horie, who shook up corporate Japan with his agressive business tactics, was indicted on Monday on charges of breaking securities law by spreading false information and falsifying accounts. REUTERS/Issei Kato

Japanese Internet venture company Livedoor Co. President Kozo Hiramatsu adjusts his glasses during a news conference at the company headquarters in Tokyo February 13, 2006, after the company's former chief Takafumi Horie was indicted by prosecutors. Horie, who shook up corporate Japan with his agressive business tactics, was indicted on Monday on charges of breaking securities law by spreading false information and falsifying accounts. REUTERS/Issei Kato

Duke's J.J. Redick (L) fouls Mississippi State's Winsome Frazier as he drives to the basket during second round NCAA men's basketball action at the Charlotte Coliseum, March 20, 2005. REUTERS/Robert Padgett rdp

Peruvian Omar Acevedo (R) is embraced by his unidentified partner after he won the body building competition at the Sarita Colonia prison in Lima, Peru's port city of Callao, September 24, 2004. More than 100 prisoners took part from different countries including Ecuador, France, the Netherlands, the Dominican Republic and Brazil. The competition is part of a plan to help prisoners reduce stress and agression levels while in jail.REUTERS/Pilar Olivares PO

PICTURES OF THE YEAR 2004 Vanderlei de Lima of Brazil (L) is grabbed by a lone spectator while leading the men's Olympic marathon during the Athens 2004 Olympic Games, on August 29, 2004. De Lima lost his 48-second lead as a result of the agression, was passed twice and able to hold on and win only the bronze medal. REUTERS/Ruben Sprich

Chinese Premier Wen Jiabao attends a commemoration meeting at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. REUTERS/Wilson Chu WC/CP

Chinese Premier Wen Jiabao acknowledges dignitaries who gathered to hear his speech at an anniversary ceremony at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. REUTERS/Wilson Chu WC/CP

Chinese Premier Wen Jiabao delivers a speech during an anniversary ceremony at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. REUTERS/Wilson Chu WC/CP

Chinese Premier Wen Jiabao delivers a speech during an anniversary ceremony at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. The Chinese characters read "Peaceful and Coexistence ". REUTERS/Wilson Chu WC/CP

Chinese Premier Wen Jiabao delivers a speech during an anniversary ceremony at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. REUTERS/Wilson Chu WC/CP

Chinese Premier Wen Jiabao delivers a speech during an anniversary ceremony at the Great Hall of the People in Beijing June 28, 2004. China will, as always, steadfastly commit itself to the Five Principles of Peaceful Coexistence, Wen said at the meeting on Monday. The Five Principles, initiated by China, India and Myanmar in 1954, include mutual respect for sovereignty and territorial integrity, mutual non-agression and non-interference in each other's internal affairs. REUTERS/Wilson Chu WC/CP

Young Muslim women wearing islamic headscarfs shout slogans in the streets of Marseille to protest against a looming ban on Islamic headscarves in French state schools, January 17, 2004. The French government planned to submit to parliament a draft law banning religious symbols such as Islamic headscarves, Jewish skullcaps and large Christian crosses from state schools. The banner reads " no to humiliations, no to agressions". REUTERS/Jean-Paul Pelissier