Samira Abbas, mother of Ehab al-Wazni, an Iraqi civil society activist shot dead by unidentified gunmen, sits next to his picture at home in Kerbala, Iraq, June 22, 2021. Picture taken June 22, 2021. REUTERS/Alaa Al-Marjani

Samira Abbas, mother of Ehab al-Wazni, an Iraqi civil society activist shot dead by unidentified gunmen, sits next to his picture at home in Kerbala, Iraq, June 22, 2021. Picture taken June 22, 2021. REUTERS/Alaa Al-Marjani

Protesters try to stop police from taking the tent away from Samira Abbas, mother of Ehab al-Wazni, an Iraqi civil society activist shot dead by unidentified gunmen, as she protests in front of a court in Kerbala, Iraq, June 22, 2021. Picture taken June 22, 2021. REUTERS/Alaa Al-Marjani

Samira Abbas, holds a picture of her son Ehab al-Wazni, an Iraqi civil society activist shot dead by unidentified gunmen, as she protests in front of a court in Kerbala, Iraq, June 22, 2021. Picture taken June 22, 2021. REUTERS/Alaa Al-Marjani

Samira Abbas, holds a picture of her son Ehab al-Wazni, an Iraqi civil society activist shot dead by unidentified gunmen, as she protests in front of a court in Kerbala, Iraq, June 22, 2021. Picture taken June 22, 2021. REUTERS/Alaa Al-Marjani

Afghan men carry the coffin of one of polio vaccination health workers shot and killed by unknown gunmen at separate locations in Jalalabad, Afghanistan June 15, 2021.REUTERS/Stringer

An Afghan man cries for his brother who was one of polio vaccination health workers shot and killed by unknown gunmen at separate locations in Jalalabad, Afghanistan June 15, 2021.REUTERS/Stringer

An Afghan policeman stands next to empty coffins which are prepared for polio vaccination health workers who were shot and killed by unknown gunmen at separate locations in Jalalabad, Afghanistan June 15, 2021.REUTERS/Stringer

Mourners attend a funeral of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners attend a funeral of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners attend a funeral of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners attend a funeral of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners carry the coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners react next to a coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners react next to a coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners carry the coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners shout slogans as they carry the coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Mourners carry the coffin of Iraqi civil society activist Ehab al-Wazni, who was killed by unidentified gunmen, during a funeral in Kerbala, Iraq, May 9, 2021. REUTERS/Abdullah Dhiaa al-Deen

Men pray in front of the coffin of one of three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations in Jalalabad, Afghanistan March 30, 2021.REUTERS/Parwiz

Men carry the coffin of one of three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, during a burial ceremony in Jalalabad, Afghanistan March 30, 2021. REUTERS/Parwiz

Afghan men carry the coffin of one of the three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, in Jalalabad, Afghanistan, March 30, 2021. REUTERS/Parwiz

An Afghan man cries next to the coffin of one of the three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, in Jalalabad, Afghanistan, March 30, 2021.REUTERS/Parwiz

Afghan men carry the coffin of one of the three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, in Jalalabad, Afghanistan, March 30, 2021.REUTERS/Parwiz

Afghan men carry the coffin of one of the three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, in Jalalabad, Afghanistan, March 30, 2021. REUTERS/Parwiz TPX IMAGES OF THE DAY

Afghan men carry the coffin of one of the three female polio vaccination health workers who were shot and killed by unknown gunmen at two separate locations, in Jalalabad, Afghanistan, March 30, 2021.REUTERS/Parwiz

Evidence markers are pictured at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers stand guard near the crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers work at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

A police officer stands guard near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

People ride on a motorcycle near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Members of the Mexican National Guard stand guard near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

A member of the Mexican National Guard inspects near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers work at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers work at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers speak with neighbours near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Police officers work at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

A police officer inspects near a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

A police officer works at a crime scene where gunmen killed at least 13 Mexican police officers in an ambush, in Coatepec Harinas, Mexico March 19, 2021. REUTERS/Edgard Garrido

Afghan men carry the coffin of one of three female media workers who were shot and killed by unknown gunmen, in Jalalabad, AfghanistanMarch 3, 2021.REUTERS/Parwiz

Afghan men pray in front of the coffin of one of three female media workers who were shot and killed by unknown gunmen, in Jalalabad, Afghanistan March 3, 2021. REUTERS/Parwiz

Afghan men carry the coffin of one of three female media workers who were shot and killed by unknown gunmen, in Jalalabad, Afghanistan March 3, 2021.REUTERS/Parwiz

Afghan men carry the coffin of one of three female media workers who were shot and killed by unknown gunmen, in Jalalabad, Afghanistan March 3, 2021. REUTERS/Parwiz

Afghan men pray in front of the coffin of one of three female media workers who were shot and killed by unknown gunmen, in Jalalabad, Afghanistan March 3, 2021. REUTERS/Parwiz

Relatives stand near the body of one of three female media workers who were shot and killed by unknown gunmen, at a hospital in Jalalabad, Afghanistan March 2, 2021.REUTERS/Parwiz

Afghan men transport the body of one of three female media workers who were shot and killed by an unknown gunmen, at a hospital in Jalalabad, Afghanistan March 2, 2021.REUTERS/Parwiz

Afghan men transport the body of one of three female media workers who were shot and killed by an unknown gunmen, at a hospital in Jalalabad, Afghanistan March 2, 2021.REUTERS/Parwiz

A soldier guards the area where eleven people were killed when unidentified gunmen riding in a truck opened fire in Tonala, State of Jalisco, Mexico February 27, 2021. REUTERS/Fernado Carranza

A soldier guards the area where eleven people were killed when unidentified gunmen riding in a truck opened fire in Tonala, State of Jalisco, Mexico February 27, 2021. REUTERS/Fernado Carranza

A piece of cloth belonging to one of the students is seen on the ground after gunmen attacked and abducted students and teachers from the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Children watch as the body of one of the female judges shot dead by unknown gunmen is carried by her relatives after an attack in Kabul, Afghanistan January 17, 2021. REUTERS/Mohammad Ismail

Relatives carry the body of one of the female judges shot dead by unknown gunmen in Kabul, Afghanistan January 17, 2021. REUTERS/Mohammad Ismail TPX IMAGES OF THE DAY

Relatives carry the body of one of the female judges shot dead by unknown gunmen in Kabul, Afghanistan January 17, 2021. REUTERS/Mohammad Ismail

Relatives carry the body of one of the female judges shot dead by unknown gunmen in Kabul, Afghanistan January 17, 2021. REUTERS/Mohammad Ismail

Police stand guard at a crime scene after unidentified gunmen burst into a wake killing several people, according to authorities, in Celaya, Mexico January 7, 2021. Picture taken January 7, 2021. REUTERS/Sergio Maldonado

Police stand guard near a crime scene after unidentified gunmen burst into a wake killing several people, according to authorities, in Celaya, Mexico January 7, 2021. Picture taken January 7, 2021. REUTERS/Sergio Maldonado

A boy rides a bike past Government Science school where gunmen abducted students, in Kankara, in northwestern Katsina state, Nigeria December 16, 2020. REUTERS/Afolabi Sotunde

A woman stands near Government Science school where gunmen abducted students, in Kankara, in northwestern Katsina state, Nigeria December 16, 2020. REUTERS/Afolabi Sotunde

A view shows the Government Science school where gunmen abducted students, in Kankara, in northwestern Katsina state, Nigeria December 16, 2020. REUTERS/Afolabi Sotunde

A collection of student footwears left behind after gunmen abducted students at the Government Science school in Kankara, in northwestern Katsina state, Nigeria December 13, 2020. Picture taken December 13, 2020. REUTERS/Afolabi Sotunde