A Peruvian shaman carries a boa constrictor snake during a ritual of predictions for the new year at Pescadores beach in Chorrillos, Lima, Peru December 27, 2018. REUTERS/Mariana Bazo 

Ceremonial staffs of leaders of the Nasa indigenous tribe are seen at a sugar cane field they claim as their ancestral lands in Corinto, Colombia, May 11, 2017. Picture taken May 11, 2017. REUTERS/Federico Rios 

Ceremonial staffs of leaders of the Nasa indigenous tribe are seen at a sugar cane field they claim as their ancestral lands in Corinto, Colombia, May 11, 2017. Picture taken May 11, 2017. REUTERS/Federico Rios 

A Mapuche Indian activist waves and shouts slogans next to an image of Francisca Linconao, who is an inmate, that reads "War to the State, Marrichiweu! (Thousand times we will be victorious)" during a demonstration to demand justice for indigenous Mapuche inmates as well as for their indigenous rights and land for their communities, in Santiago, Chile, November 21, 2016. REUTERS/Ivan Alvarado 

Mapuche Indian activists raise their sticks during a demonstration to demand justice for indigenous Mapuche inmates as well as for their indigenous rights and land for their communities, in Santiago, Chile, November 21, 2016. REUTERS/Ivan Alvarado 

Mapuche Indian activists raise their sticks during a demonstration to demand justice for indigenous Mapuche inmates as well as their indigenous rights and land for their communities, in Santiago, Chile, November 21, 2016. REUTERS/Ivan Alvarado 

A Mapuche Indian activist blows a trutruca, a traditional trumpet, as they raise their sticks during a demonstration to demand justice for indigenous Mapuche inmates as well as their indigenous rights and land for their communities, in Santiago, Chile, November 21, 2016. REUTERS/Ivan Alvarado 

Native American activists rally to call on President Barack Obama to stop the Dakota Access Pipeline, in front of the White House in Washington, U.S. September 13, 2016. REUTERS/Jonathan Ernst 

Native American activists rally to call on President Barack Obama to stop the Dakota Access Pipeline, in front of the White House in Washington, U.S. September 13, 2016. REUTERS/Jonathan Ernst 

A Mapuche Indian activist is detained by riot policemen during a rally in Santiago, Chile, April 6, 2016. The demonstrators say they are demanding justice for indigenous Mapuche inmates as well as respect for their indigenous rights and land for their communities. REUTERS/Ivan Alvarado TPX IMAGES OF THE DAY

An Aymara woman holds a child as she stands on the side of the road to watch vehicles in the fifth stage Jujuy-Uyuni in the Dakar Rally 2016 near Uyuni, Bolivia, January 7, 2016. REUTERS/Marcos Brindicci

A Mapuche Indian activist prepares to throw a stone at riot police vehicle during a protest march by Mapuche Indian activists against Columbus Day in downtown Santiago, Chile, October 12, 2015. REUTERS/Ivan Alvarado TPX IMAGES OF THE DAY

A Colombian Nukak Maku Indian man weaves with his foot in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. Since emerging from the jungle in 2005, half naked and carrying blowpipes, the Nukak have lived in settlements near the frontier town of San Jose del Guaviare, a humid outpost in the Amazon 400 km (250 miles) southeast of the capital Bogota. Picture taken September 3, 2015. To match Feature HEALTH-MENTAL/COLOMBIA REUTERS/John Vizcaino

A Colombian Nukak Maku Indian boy gestures in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. Since emerging from the jungle in 2005, half naked and carrying blowpipes, the Nukak have lived in settlements near the frontier town of San Jose del Guaviare, a humid outpost in the Amazon 400 km (250 miles) southeast of the capital Bogota. Picture taken September 3, 2015. To match Feature HEALTH-MENTAL/COLOMBIA REUTERS/John Vizcaino TPX IMAGES OF THE DAY

A Colombian Nukak Maku Indian child rests in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. Since emerging from the jungle in 2005, half naked and carrying blowpipes, the Nukak have lived in settlements near the frontier town of San Jose del Guaviare, a humid outpost in the Amazon 400 km (250 miles) southeast of the capital Bogota. Picture taken September 3, 2015. To match Feature HEALTH-MENTAL/COLOMBIA REUTERS/John Vizcaino TPX IMAGES OF THE DAY

Mapuche Indian activists run away from tear gas released by riot police while a group of truck owners travel along a main avenue to protest against what they claim is damage done by other Mapuche Indians towards their property, in Santiago, Chile August 27, 2015. REUTERS/Ivan Alvarado 

Mapuche Indian activists take cover from a jet of water released from a riot police vehicle, while a group of truck owners travel along a main avenue to protest against what they claim is damage done by other Mapuche Indians towards their property, in Santiago, Chile August 27, 2015. REUTERS/Ivan Alvarado TPX IMAGES OF THE DAY

A Mapuche Indian activist holds up a banner that reads "Justice for Jaime Mendoza Collio", a Mapuche Indian who was shot dead by police during a land dispute, during a rally outside the government palace in Santiago, Chile, August 27, 2015. Activists said that they held the rally to show their support for indigenous Mapuche inmates, as well as to request for respect for their indigenous rights and land for their communities from the Chilean government. REUTERS/Ivan Alvarado 

A Mapuche Indian activist holds up an image of Rodrigo Melinao, a Mapuche Indian who was found dead in a countryside, during a rally outside the government palace in Santiago, Chile, August 27, 2015. Activists said that they held the rally to show their support for indigenous Mapuche inmates, as well as to request for respect for their indigenous rights and land for their communities from the Chilean government. REUTERS/Ivan Alvarado 

Mapuche Indian activists clash with riot policemen during a rally outside the government palace in Santiago, Chile, August 27, 2015. Activists said that they held the rally to show their support for indigenous Mapuche inmates, as well as to request for respect for their indigenous rights and land for their communities from the Chilean government. REUTERS/Ivan Alvarado 

A Mapuche Indian activist shouts slogans as they clash with riot policemen during a rally outside the government palace in Santiago, Chile, August 27, 2015. Activists said that they held the rally to show their support for indigenous Mapuche inmates, as well as to request for respect for their indigenous rights and land for their communities from the Chilean government. REUTERS/Ivan Alvarado TPX IMAGES OF THE DAY

Chiefs of indigenous communities of the Amazonas attend a news conference in Lima August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a media release. REUTERS/Mariana Bazo 

Chiefs of indigenous communities of the Amazonas attend a news conference in Lima August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a media release. REUTERS/Mariana Bazo 

Chiefs of indigenous communities of the Amazonas attend a news conference in Lima August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a media release. REUTERS/Mariana Bazo 

Chiefs of indigenous communities of the Amazonas attend a news conference in Lima August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a media release. REUTERS/Mariana Bazo 

Carlos Sandi, president of Amazon's native communities of the Corrientes basin, speaks during a news conference in Lima August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a media release. REUTERS/Mariana Bazo 

Carlos Sandi, (R) President of Amazon's native communities of the Corrientes basin, accompanied by other leaders, speaks during a news conference in Lima, August 13, 2015. Chiefs of indigenous communities near Peru’s biggest oil field, block 192, are pressing for better benefits and environmental monitoring as the government negotiates a new contract with energy companies, according to a press release. REUTERS/Mariana Bazo 

Raoni Metuktire, a leader of the Brazilian indigenous ethnic Kayapo people, reacts at a news conference before a protest during the National Indigenous Mobilization at the Esplanade of Ministries in Brasilia April 14, 2015. Organizers of the mobilization aim to discuss issues of land demarcation and indigenous rights with authorities. REUTERS/Ueslei Marcelino 

Wechpa Rowland, dressed in a buffalo costume, waits for the Grand Entry at the Denver March Powwow in Denver March 20, 2015. The annual event attracts almost 100 Native American tribes with over 1,000 Indian dancers. REUTERS/Rick Wilking TPX IMAGES OF THE DAY 

Pemon indigenous porters cover themselves from the rain with plastics bags on top of Roraima Mount, near Venezuela's border with Brazil January 16, 2015. A mysterious table-topped mountain on the Venezuela-Brazil border that perplexed 19th century explorers and inspired "The Lost World" novel is attracting ever more modern-day adventurers. Once impenetrable to all but the local Pemon indigenous people, now several thousand trekkers a year make the six-day hike across Venezuela's savannah, through rivers, and up a narrow path that scales Mount Roraima's 600-meter cliff-faces. While that is a help to Venezuela's tottering tourism industry and brings revenues to local communities, it is also scattering a prehistoric landscape with unwanted litter. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY)

ATTENTION EDITORS: PICTURE 13 OF 16 FOR WIDER IMAGE PACKAGE 'DISCOVERING VENEZUELA'S LOST WORLD'

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Devotees of the Afro-Brazilian goddess of the sea Iemanja pay tribute on Iemanja's Day at Ramirez beach in Montevideo February 2, 2015. On this day every year, worshippers light candles at a shrine and throw sweets, alcoholic drinks, fruits and cheap jewellery into the sea as offerings to ask for good health and luck in love and work. REUTERS/Jorge Adorno (URUGUAY - Tags: RELIGION TPX IMAGES OF THE DAY SOCIETY) 

An Andean man eats outside his straw house in a Uros island at Lake Titicaca in Puno November 5, 2014. The Uros islands are a group of 70 man-made totora reed islands floating on the lake, which according to Peru's tourism board iPeru is the world's highest navigable lake at over 4,000 meters above sea level. The Uros people fish and hunt, but tourism is their main source of livelihood. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY) 

Andeans prepare their boats at the shores of a Uros island at Lake Titicaca in Puno November 5, 2014. The Uros islands are a group of 70 man-made totora reed islands floating on the lake, which according to Peru's tourism board iPeru is the world's highest navigable lake at over 4,000 meters above sea level. The Uros people fish and hunt, but tourism is their main source of livelihood. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY ENVIRONMENT) 

An Andean girl walks in front of her home, a straw hut, at a Uros island at Lake Titicaca in Puno November 5, 2014. The Uros islands are a group of 70 man-made totora reed islands floating on the lake, which according to Peru's tourism board iPeru is the world's highest navigable lake at over 4,000 meters above sea level. The Uros people fish and hunt, but tourism is their main source of livelihood. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY TPX IMAGES OF THE DAY) 

An Andean man and a child stand at the top of a tower in a Uros island at Lake Titicaca in Puno November 5, 2014. The Uros islands are a group of 70 man-made totora reed islands floating on the lake, which according to Peru's tourism board iPeru is the world's highest navigable lake at over 4,000 meters above sea level. The Uros people fish and hunt, but tourism is their main source of livelihood. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY TPX IMAGES OF THE DAY) 

An Andean man and a woman, depicting Inca's legendary characters Manco Capac and Mama Ocllo, pose for a portrait in a Uros island at Lake Titicaca before a re-enactment in Puno November 5, 2014. According to an Inca legend, Manco Capac and Mama Occllo emerged from the waters of the lake carrying a golden staff instructed by the sun god Inti to create a temple in the spot where the staff sank into the earth. The Uros islands are a group of 70 man-made totora reed islands floating on the lake, which according to Peru's tourism board iPeru is the world's highest navigable lake at over 4,000 meters above sea level. The Uros people fish and hunt, but tourism is their main source of livelihood. The actors involved in the re-enactment were locals from Uros island. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY RELIGION TPX IMAGES OF THE DAY) 

A Mapuche Indian activist runs away from riot policemen during a protest against Columbus Day in Santiago October 12, 2014. This year marks the 522th anniversary of Christopher Columbus' arrival to the Americas. Many indigenous people in Latin America consider it the day Columbus brought slavery, disease, colonisation and genocide from Europe to the Americas. REUTERS/Ivan Alvarado (CHILEPOLITICS ANNIVERSARY - Tags: POLITICS CIVIL UNREST SOCIETY TPX IMAGES OF THE DAY ANNIVERSARY) 

Horse whisperer Martin Tata sits on his five-year-old horse "Primavera" as he performs a demonstration of "Indian taming" at the Polo Club Puesto Viejo ranch in Canuelas, northeast of Buenos Aires September 9, 2014. Tata says the techniques that he uses to tame unbroken horses avoids unnecessary violence and helps build a more harmonious relationship between humans and the horses. REUTERS/Enrique Marcarian (ARGENTINA - Tags: ANIMALS SOCIETY TPX IMAGES OF THE DAY) 

A Xicrim Indian woman uses a tablet device during a break in the fourth edition of the Traditional Indian Games of Para, held on Maruda Beach in Marapanim, September 8, 2014. Native Brazilians from 15 different tribes are participating in the event that features traditional sports and runs through September 10. Picture taken September 8, 2014. REUTERS/Paulo Santos (BRAZIL - Tags: SPORT SOCIETY) 

Kayapo Indians take paddle board lessons during a break in the fourth edition of the Traditional Indian Games of Para, held on Maruda Beach in Marapanim, September 6, 2014. Native Brazilians from 15 different tribes are participating in the event that features traditional sports and runs through September 10. Picture taken September 6, 2014. REUTERS/Paulo Santos (BRAZIL - Tags: SPORT SOCIETY) 

An Israeli Apache helicopter fires a missile towards the Gaza Strip July 18, 2014. Israel stepped up its ground offensive in Gaza early on Friday pounding targets with artillery fire and using tanks and infantry to battle Hamas fighters. Orange flashes illuminated the eastern Gaza Strip as Israeli gunboats off the Mediterranean coast fired shells and tracer bullets, and helicopters fired across the border. Hamas fired rockets back into Israel towards the southern towns of Ashdod and Ashkelon. Palestinian health officials said 23 Palestinians had been killed since Israel launched its ground offensive against the densely-populated strip of 1.8 million Palestinians on Thursday. Israel said one of its soldiers had been killed in fighting. REUTERS/Ronen Zvulun (ISRAEL - Tags: POLITICS CIVIL UNREST MILITARY CONFLICT) 

Members of the Amazonian Tatuyo tribe play in their village in the Rio Negro (Black River) near Manaus city, a World Cup host city, June 23, 2014. Because of their proximity to host city Manaus and their warm welcome, the Tatuyo have enjoyed three weeks of brisk business thanks to the World Cup. Usually, they host between 10 and 30 tourists a day. During the World Cup, this number has rocketed to 250 a day, They have become richer and other communities now come to them to sell them juices and fishes. Picture taken June 23, 2014. REUTERS/Siphiwe Sibeko (BRAZIL - Tags: SOCIETY SOCCER SPORT TRAVEL WORLD CUP)

A tourist dances with members of the Amazonian Tatuyo tribe in their village in the Rio Negro (Black River) near Manaus city, a World Cup host city, June 23, 2014. Because of their proximity to host city Manaus and their warm welcome, the Tatuyo have enjoyed three weeks of brisk business thanks to the World Cup. Usually, they host between 10 and 30 tourists a day. During the World Cup, this number has rocketed to 250 a day, They have become richer and other communities now come to them to sell them juices and fishes. Picture taken June 23, 2014. REUTERS/Andres Stapff (BRAZIL - Tags: SOCIETY SOCCER SPORT TRAVEL WORLD CUP)

Native Brazilian Nobre Arariba paints his face in the town of Santa Cruz Cabralia, north of Porto Seguro June 24, 2014. REUTERS/Arnd Wiegmann (BRAZIL - Tags: SOCIETY SPORT SOCCER WORLD CUP) 

Andean women wearing Brazil-themed jerseys play soccer at a market in Lima June 20, 2014. As the vendors at a craft market in the district of La Molina in Lima, the women played soccer during an event to promote their shops. REUTERS/Mariana Bazo (PERU - Tags: SPORT SOCCER WORLD CUP SOCIETY) 

A Guarani Indian occupies the "Bandeirantes" monument with others during a protest in Sao Paulo June 6, 2014. The Indians were protesting over a new law project called PEC 215 being debated in the legislature that would transfer the power to demarcate their ancestral lands from the federal government to Congress. REUTERS/Lunae Parracho (BRAZIL - Tags: POLITICS CIVIL UNREST ENVIRONMENT) 

Indians who are considered uncontacted by anthropologists react to a plane flying over their community in the Amazon basin near the Xinane river in Brazil's Acre State, near the border with Peru, March 25, 2014. Leaders of the Ashaninka tribe, which shares territory with this tribe and other uncontacted ones, have asked the government and NGOs for help in controlling what they consider the encroachment of these tribes on their own area, stating that the movement of other tribes is caused by pressure from illegal logging across the border in Peru. Picture taken March 25, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY)

ATTENTION EDITORS: PICTURE 01 OF 07 OF A SERIES OF EXCLUSIVE PICTURES OF A TRIBE IN THE AMAZON BASIN WHO IS CONSIDERED TO BE UNCONTACTED BY ANTHROPOLOGISTS. TO FIND ALL IMAGES SEARCH "AMAZON TRIBE" 

An indigenous Mapuche man is detained by riot policemen during clashes outside a court where Celestino Cordova, a 27-year-old indigenous Mapuche healer known as "Machi" attended to hear his sentence, in Temuco city, some 689 km (428 mile) south of Santiago, February 28, 2014. A court on Friday sentenced Cordova to 18 years in prison for his participation in the killing of a couple during an arson attack last year in a high-profile case that rekindled divisions over land rights in Chile. REUTERS/Jose Luis Saavedra (CHILE - Tags: POLITICS CIVIL UNREST SOCIETY TPX IMAGES OF THE DAY) 

A Munduruku Indian warrior carries a monkey he hunted for food during a jungle search for illegal mines and miners in their territory near the Tapajos river, a major tributary of the Amazon in western Para state January 19, 2014. The Munduruku tribe has seen their land encroached on by wildcat miners in search of gold, and the tribe's leaders travelled to the capital Brasilia last year to demand the federal government remove non-indigenous miners from their territory. Rather than wait for a court decision to start the process - which could take years - the Munduruku decided to take matters into their own hands and expel the wildcat miners. Picture taken January 19, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: ENVIRONMENT POLITICS ANIMALS)

ATTENTION EDITORS: PICTURE 20 OF 26 FOR PACKAGE 'MAN HUNT FOR WILDCAT GOLD MINERS'
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A Munduruku Indian woman warrior carries a monkey on her head while on a search for illegal gold mines and miners in their territory, near the Kadiriri river, a tributary of the Tapajos and Amazon rivers in western Para state January 25, 2014. The Munduruku tribe has seen their land encroached on by wildcat miners in search of gold, and the tribe's leaders travelled to the capital Brasilia last year to demand the federal government remove non-indigenous miners from their territory. Rather than wait for a court decision to start the process - which could take years - the Munduruku decided to take matters into their own hands and expel the wildcat miners. Picture taken January 25, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: ENVIRONMENT POLITICS ANIMALS)

ATTENTION EDITORS: PICTURE 21 OF 26 FOR PACKAGE 'MAN HUNT FOR WILDCAT GOLD MINERS'
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Munduruku Indian warriors stand guard over an illegal gold miner who was detained by a group of warriors searching out illegal gold mines and miners in their territory near the Caburua river, a tributary of the Tapajos and Amazon rivers in western Para state January 20, 2014. The Munduruku tribe has seen their land encroached on by wildcat miners in search of gold, and the tribe's leaders travelled to the capital Brasilia last year to demand the federal government remove non-indigenous miners from their territory. Rather than wait for a court decision to start the process - which could take years - the Munduruku decided to take matters into their own hands and expel the wildcat miners. Picture taken January 20, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: ENVIRONMENT POLITICS TPX IMAGES OF THE DAY)

ATTENTION EDITORS: PICTURE 08 OF 26 FOR PACKAGE 'MAN HUNT FOR WILDCAT GOLD MINERS'
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Members of the Guarani Nandeva tribe stand guard at the entrance to one of the 14 farms they have been occupying for the past 78 days, claiming they are part of the ancestral land called Tekoha Yvy Katu, in the Japora municipality of Mato Grosso do Sul state, near the southern border with Paraguay, December 18, 2013. Guarani Indians are preparing to resist the possible arrival of police to forcibly evict them under court order, and have also sent a letter to Brazil's President Dilma Rousseff saying that they are "ready to die" fighting for the land. REUTERS/Lunae Parracho (BRAZIL - Tags: POLITICS CIVIL UNREST ENVIRONMENT SOCIETY) 

Indians clash with guards during a protest against the Indian policy of President Dilma Rousseff's government at the Planalto Palace in Brasilia, December 4, 2013. The protesters are opposing two bills being examined in National Congress, dealing with demarcation of indigenous lands, and are also demanding the repeal of Ordinance 303 of the Attorney General of the Union (AGU). REUTERS/Ueslei Marcelino (BRAZIL - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

A member of the Guarani Nandeva tribe stands watch at a roadblock they built to keep farmers out after they occupied a farm they claim is part of the ancestral land they call Tekoha Yvy Katu, in the Japora municipality of Mato Grosso do Sul state, near the southern border with Paraguay, November 22, 2013. Guarani Indians occupied 14 farms in Japora during this past October, claiming it is part of the land legally declared as Indian land by the Supreme Court in 2005, although still waiting to be signed into law by Brazil's president since then. Picture taken November 22. REUTERS/Lunae Parracho (BRAZIL - Tags: POLITICS ENVIRONMENT CIVIL UNREST) 

Chief Arvol Looking Horse, Spiritual Leader of the Great Sioux Nation, pets a and talks to a carriage horse in Central Park, New York November 17, 2013. Arvol hopes to reconcile the opposing views of ending the Central Park horse and buggy ride. Newly elected mayor Bill Di Blasio is in support of ending the ride. The Central Park horse and buggy ride has been for decades an iconic New York experience along with a Broadway show or a visit to the Empire State Building. REUTERS/Carlo Allegri (UNITED STATES - Tags: SOCIETY ANIMALS) 

Brazilian indigenous people take a bath in the Cuiaba river during the XII Games of the Indigenous People in Cuiaba November 15, 2013. Forty-eight Brazilian Indigenous tribes will present their cultural rituals and compete in traditional sports such as archery, running with logs and canoeing during the XII Games of Indigenous People which will run until November 16. REUTERS/Paulo Whitaker (BRAZIL - Tags: SPORT SOCIETY) 

Members of the Terena Indian tribe watch over the entrance to a ranch they invaded the night before in Miranda, Mato Grosso do Sul state, October 10, 2013. Terena Indians occupied overnight more than 3,000 hectares (7,413 acres) of ranches that they claim is part of their ancestral land, in the ongoing land conflict pitting native Brazilians against the government, agribusiness, large mining and energy companies. REUTERS/Lunae Parracho (BRAZIL - Tags: ENVIRONMENT POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

A protester faces off against a guard in front of Planalto Palace, during a demonstration by indigenous Indians against proposed constitutional amendment PEC 215, which amends the rules for demarcation of indigenous lands, in Brasilia, October 2, 2013. According to the organizers, the protest is part of the National Indigenous Mobilization, with events in various parts of Brazil from September 30 to October 5, to defend the territorial rights of the indigenous population against the government, agribusiness and large mining and energy companies. REUTERS/Ueslei Marcelino (BRAZIL - Tags: POLITICS CIVIL UNREST SOCIETY ENVIRONMENT)