A man gestures as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance, in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A protester gestures as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance, in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A graffiti with the number 43 painted on the door of the National Palace is seen as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Women wearing face masks hold a Mexican flag as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A woman holds a Mexican flag as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A protester wearing a mask holds a candle as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A person holds a banner with the picture of one of the 43 missing students of the Ayotzinapa Teacher Training College as relatives march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Relatives of the 43 missing students of the Ayotzinapa Teacher Training College hold banners during the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Relatives of the 43 missing students of the Ayotzinapa Teacher Training College hold banners as they march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Protesters raise their fists as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Protesters raise their fists as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A child wears a t-shirt with the picture of one of the 43 missing students of the Ayotzinapa Teacher Training College as relatives march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A child wears a t-shirt with the picture of one of the 43 missing students of the Ayotzinapa Teacher Training College as relatives march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

A protester paints a graffiti as relatives of the 43 missing students of the Ayotzinapa Teacher Training College march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. Graffiti reads: "Justice". REUTERS/Edgard Garrido

Relatives of the 43 missing students of the Ayotzinapa Teacher Training College hold banners as they march on the 6th anniversary of their disappearance in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

An Ethiopian Federal Police member is seen next to a bonfire lit during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

An Ethiopian Orthodox faithful holds a burning candle during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Abune Mathias, Patriarch of Ethiopian Orthodox bless the faithful during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

An Ethiopian Orthodox deacon holds a cross depicting the Jesus’ crucification during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox faithful take a selfie during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox deacons blow traditional trumpets during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox deacons perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox deacons sing during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members wait to perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Ethiopian Orthodox choir members wait to perform during the Meskel Festival to commemorate the discovery of the true cross on which Jesus Christ was crucified on, in Addis Ababa, Ethiopia, September 26, 2020. REUTERS/Tiksa Negeri

Mexico's President Andres Manuel Lopez Obrador gestures during the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador, and relatives of the 43 missing students of the Ayotzinapa Teacher Training College, attend the delivery of an investigation report marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he speaks during the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador holds a piece of fabric embroidered by a relative of one of the 43 missing students of the Ayotzinapa Teacher Training College, as they attend the delivery of an investigation report marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador, Mexico's Undersecretary of Human Rights Alejandro Encinas and Maria Martinez, mother of Miguel Angel Hernandez Martinez, hold pieces of fabric embroidered by relatives of the 43 missing students of the Ayotzinapa Teacher Training College, as they attend the delivery of an investigation report with marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he speaks during the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador holds a piece of fabric embroidered by a relative of one of the 43 missing students of the Ayotzinapa Teacher Training College, as they attend the delivery of an investigation report with marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador and Mexico's Undersecretary of Human Rights Alejandro Encinas hold pieces of fabric embroidered by relatives of the 43 missing students of the Ayotzinapa Teacher Training College, as they attend the delivery of an investigation report with marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, vmarking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador gestures as he attends the delivery of an investigation report with relatives of the 43 missing students of the Ayotzinapa Teacher Training College, vmarking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador, and relatives of the 43 missing students of the Ayotzinapa Teacher Training College, attend the delivery of an investigation report marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador, and relatives of the 43 missing students of the Ayotzinapa Teacher Training College, attend the delivery of an investigation report marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Mexico's President Andres Manuel Lopez Obrador, and relatives of the 43 missing students of the Ayotzinapa Teacher Training College, attend the delivery of an investigation report marking the 6th anniversary of their disappearance, at the National Palace in Mexico City, Mexico September 26, 2020. REUTERS/Edgard Garrido

Musicians perform in front of the old memorial commemorating the 1980 Oktoberfest bombing, during a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Dieter Reiter, Mayor of the City of Munich, speaks at a memorial service commemorating the 1980 Oktoberfest bombing at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

General view of the new memorial commemorating the 1980 Oktoberfest bombing prior to a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

General view of the new memorial commemorating the 1980 Oktoberfest bombing prior to a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

General view of the new memorial commemorating the 1980 Oktoberfest bombing prior to a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

General view of the new memorial commemorating the 1980 Oktoberfest bombing prior to a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

People attend a memorial service commemorating the 1980 Oktoberfest bombing at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

German President Frank-Walter Steinmeier walks past an old memorial commemorating the 1980 Oktoberfest bombing during a wreath ceremony at a memorial service at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Dimitrios Lagkadinos, Renata Martinez, Robert Hoeckmayr and Gudrun Lang, survivors of the 1980 Oktoberfest bombing, attend a memorial service commemorating the attack at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Markus Soeder, Prime Minister of Bavaria, reacts as he speaks at a memorial service commemorating the 1980 Oktoberfest bombing at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Markus Soeder, Prime Minister of Bavaria, adjusts his protective mask at a memorial service commemorating the 1980 Oktoberfest bombing at Theresienwiese in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Renate Martinez, survivor of the 1980 Oktoberfest bombing, walks past the new memorial at Theresienwiese commemorating the attack, after a memorial service in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

Dimitrios Lagkadinos and Renate Martinez, survivors of the 1980 Oktoberfest bombing, German President Frank-Walter Steinmeier and his wife Elke Buedenbender and Markus Soeder, Prime Minister of Bavaria, pose for pictures in front of the new memorial at Theresienwiese after a memorial service in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert

German President Frank-Walter Steinmeier walks through the new memorial commemorating the 1980 Oktoberfest bombing at Theresienwiese, after a memorial service in Munich, Germany, September 26, 2020. REUTERS/Andreas Gebert