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 

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

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

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

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) 

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 Mapuche supporter is detained by riot police during a protest against the government in Valparaiso city, about 121 km (75 miles) northwest of Santiago, October 24, 2012. The rally was held in support of indigenous Mapuche inmates who have been on a hunger strike for 59 days to protest against charges of attempted murder of a police officer and illegal possession of weapons, according to local media. REUTERS/Eliseo Fernandez (CHILE - Tags: CIVIL UNREST) 

An indigenous Mapuche blows a Trutruca, a musical instrument, as they gather during a rally outside the main Chilean Justice building in Santiago October 24, 2012. The rally was held in support of indigenous Mapuche inmates who have been on a hunger strike for 59 days to protest against charges of attempted murder of a police officer and illegal possession of weapons, according to local media. REUTERS/Ivan Alvarado (CHILE - Tags: SOCIETY CIVIL UNREST CRIME LAW) 

Mapuche Indians and supporters run away from a jet of water released from a police water cannon during a rally at Santiago, October 23, 2012. The rally was held in support of indigenous Mapuche inmates who have been on a hunger strike for 58 days to protest against charges of an attempted murder of a policeman and illegal possession of weapons, according local media. REUTERS/Ivan Alvarado (CHILE - Tags: POLITICS CRIME LAW CIVIL UNREST) 

Mapuches take part in a protest against the government by placing their hands in a jar of cement, which hardened around them, through a barrier in a public square in Valparaiso city, about 121 km (75 miles) northwest of Santiago July 18, 2012. The demonstration was held in memory of Matias Catrileo Quezada, a Mapuche man who died after being shot during clashes with the police in a land dispute in southern Chile, and to protest a new law proposed by the government which toughens penalties on any type of protest and public disorder without prior permission of local authorities. REUTERS/Eliseo Fernandez (CHILE - Tags: POLITICS CIVIL UNREST) 

A Chilean Mapuche Indian plays a Kultrun as she joins a gathering around a campfire celebrating their indigenous New Year near Concepcion city, south of Santiago, June 24, 2012. From June 21 to June 24 Mapuches Indians celebrate the Winter Solstice and the renewing of the earth and its inhabitants. Picture taken June 24, 2012. REUTERS/Jose Luis Saavedra (CHILE - Tags: SOCIETY ANNIVERSARY ENVIRONMENT) 

A Mapuche woman carrying her child up marches during the International Day of Race, in downtown Santiago October 10, 2011. REUTERS/Victor Ruiz Caballero (CHILE - Tags: SOCIETY) 

An Indigenous Mapuche Chilean boy blows a Trutruca, a musical instrument, during the International Day of Race, at downtown Santiago October 10, 2011. REUTERS/Victor Ruiz Caballero (CHILE - Tags: SOCIETY) 

A Mapuche Indian child builds a model of a "ruka" (house) in their Mapudungun language at a "Casa Piedra" (stone house) public school near Tirua town, some 750 km (466 mile) southwest of Santiago, December 1, 2010. The Casa Piedra public school has built a "Ruka" to meet the learning needs of Mapuche students who are educated on their legends, language and culture. Picture taken December 1, 2010. REUTERS/Jose Luis Saavedra (CHILE - Tags: EDUCATION SOCIETY) 

Mapuche Indian children attend a lesson conducted in their Mapudungun language inside a "Ruka" (house) at a "Casa Piedra" (stone house) public school near Tirua town, some 750 km (466 mile) southwest of Santiago, December 1, 2010. The Casa Piedra public school has built a "Ruka" to meet the learning needs of Mapuche students who are educated on their legends, language and culture. Picture taken December 1, 2010. REUTERS/Jose Luis Saavedra (CHILE - Tags: EDUCATION SOCIETY) 

Mapuche Indian children play outside a "ruka" (house) at a "Casa Piedra" (stone house) public school near Tirua town, some 750 km (466 mile) southwest of Santiago, December 1, 2010. The Casa Piedra public school has built a "ruka" to meet the learning needs of Mapuche students who are educated on their legends, language and culture. Picture taken December 1, 2010. REUTERS/Jose Luis Saavedra (CHILE - Tags: EDUCATION SOCIETY) 

Supporters of the Mapuche Indians movement shout slogans during a rally in Santiago September 1, 2010, in support of the 32 Mapuches on a 52-day hunger strike against the country's anti-terrorist law in various prisons at Temuco and Concepcion city. REUTERS/Victor Ruiz Caballero (CHILE - Tags: CIVIL UNREST SOCIETY IMAGES OF THE DAY) 

A native Mapuche Indian shows her field in Temuco city, some 677 km (420 miles) south of Santiago November 17, 2009. Members of the Mapuche communities are meeting to discuss Chile's indigenous politics and to claim from the government their ancestral rights to the land. REUTERS/Víctor Ruiz Caballero (CHILE CONFLICT POLITICS SOCIETY) 

Native Mapuche Indian children ride a horse in Temuco city, some 677 km (420 miles) south of Santiago November 17, 2009. Members of the Mapuche communities are meeting to discuss Chile's indigenous politics and to claim from the government their ancestral rights to the land. REUTERS/Víctor Ruiz Caballero (CHILE CONFLICT POLITICS SOCIETY) 

A native Mapuche Indian boy stands in front of other members of the community in Temucuicui, Angol town near Temuco city, some 677 km (420 miles) south of Santiago, November 14, 2009. Members of the Mapuche communities are meeting to discuss Chile's indigenous politics and to claim from the government their ancestral rights to the land. REUTERS/Víctor Ruiz Caballero (CHILE CONFLICT POLITICS SOCIETY) 

A relative of Jaime Facundo Mendoza Collio, a Mapuche Indian who died after being shot by Chilean police, waits outside the Chilean army quarters of the military prosecutor in Angol town near Temuco city, some 677 km (420 miles) south of Santiago, August 25, 2009. Mendoza was shot dead during a land dispute near "Rekem Pillan" Indian community in southern Chile. REUTERS/Ivan Alvarado (CHILE POLITICS SOCIETY) FOR BEST QUALITY IMAGE ALSO SEE: GM1E58S05F101 

Police arrest a member of the Mapuches Indians Movement during a rally in front of the Government Palace in Santiago August 13, 2009. The rally was held to protest the death of Faculdo Mendoza Collio, 24, a Mapuche Indian who died on August 12, 2009 after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Victor Ruiz Caballero (CHILE POLITICS CONFLICT SOCIETY) 

Native Mapuche women participate in a ceremony during a rally in Valparaiso city, about 120 km (75 miles) northwest of Santiago, January 24, 2008. The rally was held in support of Patricia Troncoso, a pro-Mapuche activist who is being held in prison and is on a hunger strike, and in memory of Matias Catrileo Quezada, a Mapuche man who died after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Eliseo Fernandez (CHILE) 

Riot police officers detain activists from the Mapuche Indian movement during a rally in Santiago January 23, 2008. The rally was held in support of Patricia Troncoso, a pro-Mapuche activist held in prison who is on a hunger strike, and in memorial of Matias Catrileo Quezada, a young Mapuche man who died after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Victor Ruiz Caballero (CHILE) 

Riot police officers detain an activist from the Mapuche Indian movement during a rally in Santiago January 23, 2008. The rally was held in support of Patricia Troncoso, a pro-Mapuche activist held in prison who is on a hunger strike, and in memorial of Matias Catrileo Quezada, a young Mapuche man who died after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Victor Ruiz Caballero (CHILE) 

Members and supporters of the Mapuches Indians movement shout slogans during a rally in downtown Santiago January 9, 2008.The rally was held to protest the death of Matias Catrileo Quezada, 22, a Mapuche Indian who died on January 3, 2008 after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Victor Ruiz Caballero (CHILE) 

A Mapuche Indian attends a funeral procession of Matias Catrileo Quezada to the cemetery in Temuco January 5, 2008. Catrileo, a young Mapuche Indian, died on January 3, 2008 after being shot during clashes with the police in a land dispute in southern Chile. REUTERS/Jose Luis Saavedra (CHILE) 

Native Mapuche women participate in a ceremony to commemorate the International Day of Native Women in Valparaiso September 4, 2007. The memory of Bolivian independence hero Bartolina Sisa, executed and quartered while fighting the Spanish Conquistadors in 1782, is honoured every year. REUTERS/Eliseo Fernandez (CHILE) 

Native Mapuche women participate in a ceremony to commemorate the International Day of Native Women in Valparaiso September 4, 2007. The memory of Bolivian independence hero Bartolina Sisa, executed and quartered while fighting the Spanish Conquistadors in 1782, is honoured every year. REUTERS/Eliseo Fernandez (CHILE) 

Native Mapuches participate in a ceremony to commemorate the International Day of Native Women in Valparaiso September 4, 2007. The memory of Bolivian independence hero Bartolina Sisa, executed and quartered while fighting the Spanish Conquistadors in 1782, is honoured every year. REUTERS/Eliseo Fernandez (CHILE)