Participants display placards as they participate in a procession against plans to reimpose death penalty and intensify drug war during "Walk for Life" in Luneta park, Metro Manila, Philippines February 24, 2018. REUTERS/Romeo Ranoco 

A Catholic nun displays a placard as she participates in a procession against plans to reimpose death penalty and intensify drug war during "Walk for Life" in Luneta park, Metro Manila, Philippines February 24, 2018. REUTERS/Romeo Ranoco 

A gun is pictured as armed forces members patrol during an operation against drug dealers in Vila Kennedy slum, in Rio de Janeiro, Brazil February 23, 2018. REUTERS/Ricardo Moraes 

Bullets are pictured on a machine gun as armed forces members patrol during an operation against drug dealers in Vila Kennedy slum, in Rio de Janeiro, Brazil February 23, 2018. REUTERS/Ricardo Moraes 

A boy uses a computer at a makeshift internet shop inside Market 3 in Navotas, Metro Manila, Philippines, October 28, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man, whose wife was arrested during an anti-drug operation and has a bout of tuberculosis, coughs outside a window while his daughter plays with candles inside a shanty in Navotas, Metro Manila, Philippines, December 6, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. 

Residents walk through a partially-flooded street in Market 3 in Navotas, Metro Manila, Philippines, November 21, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Fishermen cast their nets off Navotas Bay, Metro Manila, Philippines, December 15, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A belt, a rosary, shorts and a couple of candles adorn a jeepney that was converted into a shanty by a man, whose wife was arrested during an anti-drug operation and was found dead a day later, in Navotas, Metro Manila, Philippines, December 9, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Children play with a baby at the fish port in Navotas, Metro Manila, Philippines, December 5, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A woman whose son was killed during an anti-drug operation, plays with her puppy at the entrance of her shanty in Market 3 in Navotas, Metro Manila, Philippines, December 15, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A woman shows a picture of her son, a soldier killed during the battle against Islamist militants in Marawi, on Mindanao island, inside her shanty in Navotas, Metro Manila, Philippines, December 15, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Residents are seen outside their shanties in Navotas, Metro Manila, Philippines, October 28, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Residents hang out at a shop in Market 3 in Navotas, Metro Manila, Philippines, October 28, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A crying angel is painted by an artist on a wall to mark a place where a woman who was arrested during an anti-drug operation was found dead a day later, in Navotas, Metro Manila, Philippines, December 16, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Fishermen unload their day's catch of mussels at a fish port of Market 3 in Navotas, Metro Manila, Philippines, December 16, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Family and friends of a shooting victim from Market 3 take part in the funeral march along North Bay Boulevard in Navotas, Metro Manila, Philippines, November 3, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man walks through a permanently-flooded area of a fish port in Market 3 in Navotas, Metro Manila, Philippines, December 6, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Residents are seen outside their shanties in Market 3 in Navotas, Metro Manila, Philippines, December 8, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man, whose wife was arrested during an anti-drug operation and was found dead a day later, stands near fishing boats in Navotas, Metro Manila, Philippines, December 5, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man stands outside the Market 3 shanty area in Navotas, Metro Manila, Philippines, December 8, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A woman lights candles at a shrine in front of a picture of her 23-year-old son, who was killed during an anti-drug operation, inside her shanty in Market 3 in Navotas, Metro Manila, Philippines, December 6, 2017. REUTERS/Dondi Tawatao SEARCH "MANILA SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Solicitor General Jose Calida speaks to journalists as the Supreme Court starts the oral arguments on the consolidated petitions to declare Philippine President Rodrigo Duterte's drug war unconstitutional, in Manila, Philippines November 21, 2017. REUTERS/Romeo Ranoco 

Solicitor General Jose Calida talks to Lawyer Jose Manuel Diokno of the Free Legal Assistance Group (FLAG) as the Supreme Court starts the oral arguments on the consolidated petitions to declare Philippine President Rodrigo Duterte's drug war unconstitutional, in Manila, Philippines November 21, 2017. REUTERS/Romeo Ranoco 

Nuns enter the Supreme Court's compound to attend the start of the of the oral arguments on the consolidated petitions to declare Philippine President Rodrigo Duterte's drug war unconstitutional at the Supreme Court in Manila, Philippines November 21, 2017. REUTERS/Romeo Ranoco 

Supreme Court Chief Justice Maria Lourdes Sereno hits a gavel signifying the start of the oral arguments on the consolidated petitions to declare Philippine President Rodrigo Duterte's drug war unconstitutional at the Supreme Court in Manila, Philippines November 21, 2017. REUTERS/Romeo Ranoco 

Relatives of victims of extrajudicial killings show portraits of their loved ones during a Catholic mass against drug war killings at the Edsa Shrine in Pasig, metro Manila, Philippines November 5, 2017. REUTERS/Dondi Tawatao 

People light candles during a Catholic mass against drug war killings at the People Power Monument in Pasig, metro Manila, Philippines November 5, 2017. REUTERS/Dondi Tawatao 

Archbishop Socrates Villegas addresses the crowd during a Catholic mass against drug war killings at the Edsa Shrine in Pasig, metro Manila, Philippines November 5, 2017. REUTERS/Dondi Tawatao 

Relatives of victims of extrajudicial killings show portraits of their loved ones during a Catholic mass against drug war killings at the Edsa Shrine in Pasig, metro Manila, Philippines November 5, 2017. REUTERS/Dondi Tawatao 

Relatives of victims of extrajudicial killings show portraits of their loved ones during a Catholic mass against drug war killings at the Edsa Shrine in Pasig, metro Manila, Philippines November 5, 2017. REUTERS/Dondi Tawatao 

A protestor pretends to be dead to picture one of the victims of war on drugs of President Rodrigo Duterte during a National Day of Protest outside the Malacanang presidential palace in metro Manila, Philippines September 21, 2017. A note read "Don't imitate it was mistaken identity". REUTERS/Romeo Ranoco 

Charts jail 

Protesters and residents hold lighted candles and placards at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 25, 2017. REUTERS/Dondi Tawatao 

Protesters and residents hold lighted candles and placards at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 25, 2017. REUTERS/Dondi Tawatao 

Protesters and residents hold lighted candles and placards at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 25, 2017. REUTERS/Dondi Tawatao 

Saldy and Lorenza Delos Santos, parents of 17-year-old high school student Kian Delos Santos, who was killed recently in a police raid in line with the war on drugs, along with one of the three witnesses (R), take oath as they file murder charges against three anti-narcotics policemen at the Department of Justice in metro Manila, Philippines August 25, 2017. At left is Persida Acosta, Public Attorney's Office (PAO) chief. REUTERS/Romeo Ranoco 

Saldy Delos Santos comforts his wife, Lorenza, parents of 17-year-old high school student Kian Delos Santos, who was killed recently in a police raid in line with the war on drugs, along with one of the three witnesses (R), as they file murder charges against three anti-narcotics policemen at the Department of Justice in metro Manila, Philippines August 25, 2017. REUTERS/Romeo Ranoco 

Lorenza Delos Santos, 43, mother of 17-year-old high school student Kian delos Santos who was killed in a recent war on drugs police raid, cries as she is comforted by a member of the Volunteers Against Crimes and Corruption (VACC) during a hearing at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Romeo Ranoco 

Lorenza Delos Santos, 43, mother of 17-year-old high school student Kian delos Santos who was killed in a recent war on drugs police raid, cries as she is comforted by a member of the Volunteers Against Crimes and Corruption (VACC) during a hearing at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Romeo Ranoco 

Lorenza and Saldy Delos Santos, parents of 17-year-old high school student Kian Delos Santos, who was killed in a recent war on drugs by police raid, appear at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Romeo Ranoco 

Percida Acosta, chief public attorney office, and Lorenza and Saldy Delos Santos, parents of 17-year-old high school student Kian Delos Santos, who was killed in a recent war on drugs by police raid, appear at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Dondi Tawatao 

Lorenza Delos Santos, 43, mother of 17-year-old high school student Kian delos Santos who was killed in a recent war on drugs police raid, wipes her tears during a hearing at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Dondi Tawatao 

Lorenza Delos Santos, 43, mother of 17-year-old high school student Kian delos Santos who was killed in a recent war on drugs police raid, wipes her tears during a hearing at the Senate headquarters in Pasay city, metro Manila, Philippines August 24, 2017. REUTERS/Dondi Tawatao 

A protester lights candles next to a placard, seeking justice for 17-year-old high school student Kian delos Santos, who was killed in a recent police raid in an escalation of President Rodrigo Duterte's war on drugs, during a protest in front of the Philippine National Police (PNP) headquarters in Quezon city, Metro Manila, Philippines August 23, 2017. REUTERS/Romeo Ranoco 

Protesters hold placards seeking justice for 17-year-old high school student Kian delos Santos, who was killed in a recent police raid in an escalation of President Rodrigo Duterte's war on drugs, during a protest in front of the Philippine National Police (PNP) headquarters in Quezon city, Metro Manila, Philippines August 23, 2017. REUTERS/Romeo Ranoco 

A protester holds a placard and shouts anti-government slogans, seeking justice for 17-year-old high school student Kian delos Santos, who was killed in a recent police raid in an escalation of President Rodrigo Duterte's war on drugs, during a protest in front of the Philippine National Police (PNP) headquarters in Quezon city, Metro Manila, Philippines August 23, 2017. REUTERS/Romeo Ranoco 

Protesters hold placards seeking justice for 17-year-old high school student Kian delos Santos, who was killed in a recent police raid in an escalation of President Rodrigo Duterte's war on drugs, during a protest in front of the Philippine National Police (PNP) headquarters in Quezon city, Metro Manila, Philippines August 23, 2017. REUTERS/Romeo Ranoco 

A man holds a candle and a placard seeking justice for 17-year-old high school student Kian delos Santos, who was killed in a recent police raid in an escalation of President Rodrigo Duterte's war on drugs, during a protest in front of the Philippine National Police (PNP) headquarters in Quezon city, Metro Manila, Philippines August 23, 2017. REUTERS/Romeo Ranoco 

A man plays a game of cards at the wake of Romel Isanan who was killed within a week of President Rodrigo Duterte's intensified war on drugs in Navotas city north of metro Manila, Philippines August 21, 2017. Picture taken August 21, 2017. REUTERS/Dondi Tawatao 

A man sits at a wake of Conrado Gapasin, a victim of an extrajudicial killing who was killed within a week of President Rodrigo Duterte's intensified war on drugs in Navotas city north of metro Manila, Philippines August 21, 2017. Picture taken August 21, 2017. REUTERS/Dondi Tawatao 

Protesters and residents hold lighted candles and placards at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

Protesters and residents hold lighted candles at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

Protesters and residents stage a rally near the site where Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

Residents walk near the site (left side with a police makeshift line) where Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

A school boy holds up a placard at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

A woman takes part during a candle lighting vigil at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs in Caloocan city Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro 

Protesters hold placards and lit candles at the wake of Kian Loyd delos Santos, a 17-year-old high school student, who was among the people shot dead last week in an escalation of President Rodrigo Duterte's war on drugs, in Caloocan city, Metro Manila, Philippines August 21, 2017. REUTERS/Erik De Castro