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A youngster makes a graffiti during a protest of Mapuche indigenous people for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736222 )

A protester waves a Mapuche Nation flag during a march against the commemoration of the discovery of America by Christopher Columbus in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

Masked protesters clash with police after the end of a march against the commemoration of the discovery of America in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

Police stand behind their shields as a Molotov cocktail thrown by protesters burns after the end of a march against the commemoration of the discovery of America in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

A protester runs away from a police water cannon after clashes broke out at a march against the commemoration of the discovery of America in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

A man falls on the ground after being hit by water during incidents after a march of Mapuche indigenous people in downtown Santiago, on October 12, 2013, during the commemoration of Columbus Day. HECTOR RETAMAL/AFP/Getty Images ( 523734919 )

A man throws a stone to riot policemen during clashes after a march of Mapuche indigenous people in downtown Santiago, on October 12, 2013, during the commemoration of Columbus Day. HECTOR RETAMAL/AFP/Getty Images ( 523734930 )

Protesters argue with police to stop patrolling on the sidelines of their march against the commemoration of the discovery of America by Christopher Columbus in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

Mapuche indigenous people march during a protest for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736153 )

Women perform the Tinku ritual dance during a protest of Mapuche indigenous people for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736242 )

A protester wearing a puppet mask of the late Mapuche Indian Colo Colo, the symbol for a local soccer team named after him, attends a march against the commemoration of the discovery of America by Christopher Columbus in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

A performer in costume dances during a march against the commemoration of the discovery of America by Christopher Columbus in Santiago, Chile, Saturday, Oct. 12, 2013. The march was organized by members of indigenous groups demanding autonomy and the recovery of ancestral land. Protesters also demonstrated against Chile's anti-terrorism law, under which many Mapuche Indians are under arrest. Saturday is the the anniversary of Christopher Columbus' 1492 arrival in the Americas. (AP Photo/Luis Hidalgo) ( Chile Columbus Day Protest )

A Mapuche indigenous man marches during a protest for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736148 )

Mapuche indigenous people make a performance during a protest for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736193 )

A Mapuche indigenous man marches during a protest for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736145 )

Mapuche indigenous people march during a protest for the commemoration of Columbus Day in downtown Santiago, on October 12, 2013. HECTOR RETAMAL/AFP/Getty Images ( 523736162 )