A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

Souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' are seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France, September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A mug with a picture of French President Macron and the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A mug with a picture of French President Macron and the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

People visit the French President's office at the Elysee Palace during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A mug with a picture of French President Macron and the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A mug with a picture of French President Macron and the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

Souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' are seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France, September 15, 2018. REUTERS/Gonzalo Fuentes 

A stand with souvenirs bearing the Elysee Palace logo to launch the presidential brand named ''Elysee Presidence de la Republique'' is seen in the courtyard of the Elysee Palace as part of the European Heritage Days event in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

A view shows the Elysee Palace as visitors wait to enter during the European Heritage Days event at the Elysee Palace in Paris, France September 15, 2018. REUTERS/Gonzalo Fuentes 

Big Ben themed money boxes are seen for sale at a souvenir stall in London, Britain. Aug 22, 2018. REUTERS/Peter Nicholls 

A girl wears patriotic memorabilia as she is photographed by a family member, while celebrating the country's 71st Independence Day in Karachi, Pakistan August 14, 2018. REUTERS/Akhtar Soomro 

A girl with patriotic memorabilia attends a ceremony to celebrate the country's 71st Independence Day at the mausoleum of Muhammad Ali Jinnah in Karachi, Pakistan August 14, 2018. REUTERS/Akhtar Soomro 

A woman looks at souvenirs in a shop at a popular tourist area named "Old Market" in the Red Sea resort of Sharm el-Sheikh, Egypt July 12, 2018. Picture taken July 12, 2018. REUTERS/Amr Abdallah Dalsh 

Supporters of Imran Khan, chairman of the Pakistan Tehreek-e-Insaf (PTI), political party, wearing party memorabilia, during a campaign rally ahead of general elections in Karachi, Pakistan July 22, 2018. REUTERS/Akhtar Soomro 

A supporter of Bilawal Bhutto Zardari, chairman of the Pakistan People's Party (PPP), wearing party memorabilia as he dances to welcome him during a campaign rally ahead of general elections in District Thatta, Pakistan July 2, 2018. Picture taken July 2, 2018. REUTERS/Akhtar Soomro 

Memorabilia related to the U.S. Marine Sergeant Philip Mandra, who has been missing in action (M.I.A) since 1952 after fighting in the Korean War, is seen at the home of his sister, Irene Mandra, in Farmingdale, New York, U.S., May 16, 2018. Picture taken May 16, 2018. REUTERS/Lucas Jackson 

Irene Mandra is reflected in a cabinet filled with memorabilia at her home in Farmingdale, New York, U.S., May 16, 2018. Picture taken May 16, 2018. REUTERS/Lucas Jackson 

Irene Mandra poses for a portrait in her home while surrounded by memorabilia related to her search for her brother, U.S. Marine Sergeant Philip Mandra who has been missing in action (M.I.A) since 1952 after fighting in the Korean War, at her home in Farmingdale, New York, U.S., May 16, 2018. Picture taken May 16, 2018. REUTERS/Lucas Jackson 

Memorabilia items are seen inside the museum at he stone villa where former North Korean leader Kim Jong-il used to holiday with the children of Soviet commanders, in Goseong, South Korea February 6, 2018. Picture taken February 6, 2018. REUTERS/Jorge Silva 

Cynthia Hernandez places stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Cynthia Hernandez places stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Migdalia Carcano and Cynthia Hernandez sew Confederate Battle Flags in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Cynthia Hernandez places stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Blanca Hernandez sews stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Cynthia Hernandez places stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary TPX IMAGES OF THE DAY 

Cynthia Hernandez places stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Blanca Hernandez sews stars on a Confederate Battle Flag in the Alabama Flag & Banner shop in Huntsville, Alabama, U.S., August 24, 2017. REUTERS/Harrison McClary 

Historical memorabilia are displayed at the Civil Defense command bunker in Diamond Head Crater in Honolulu, Hawaii, July 6, 2017. REUTERS/Hugh Gentry 

A souvenir vendor takes a nap in front of barbed wire marking the border between North Korea and China, just north of Dandong in China's Liaoning province, April 2, 2017. REUTERS/Damir Sagolj SEARCH "DANDONG BORDER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Religious keepsakes left by migrants are seen in the chapel at the Juan Bosco migrant shelter in Nogales, Sonora, Mexico, February 1, 2017. Picture taken February 1, 2017. REUTERS/Lucy Nicholson 

People look at a portrait of Thailand's King Maha Vajiralongkorn Bodindradebayavarangkun at a royal memorabilia shop in Bangkok, Thailand January 13, 2017. REUTERS/Athit Perawongmetha 

People look at a portrait of Thailand's King Maha Vajiralongkorn Bodindradebayavarangkun at a royal memorabilia shop in Bangkok, Thailand January 13, 2017. REUTERS/Athit Perawongmetha 

Retired economist Otar Chigladze, 82, poses for a portrait at his home in Gori, Georgia, December 6, 2016. "I traveled a lot around the USSR and never missed a chance to buy Stalin memorabilia. I would earn well and could allow myself to do so," Chigladze said. REUTERS/David Mdzinarishvili SEARCH "STALINISTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Retired librarian Tsitsino Tsintsadze, 77, poses for a portrait at her home in Tbilisi, Georgia, November 29, 2016. "I have portraits of Stalin, books about him, souvenirs. Some I bought, some were given to me. My relatives and friends know about my love of Stalin and often gift me memorabilia," Tsintsadze said. REUTERS/David Mdzinarishvili SEARCH "STALINISTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

An official walks past pictures of Crown Prince Maha Vajiralongkorn for sale at a royal memorabilia shop in Bangkok, Thailand, December 1, 2016. REUTERS/Chaiwat Subprasom 

A wrapped picture of Thailand's Crown Prince Maha Vajiralongkorn is displayed for sale at a royal memorabilia shop in Bangkok, Thailand, November 29, 2016. REUTERS/Jorge Silva 

A man unwraps a picture of Thailand's Crown Prince Maha Vajiralongkorn displayed for sale at a royal memorabilia shop in Bangkok, Thailand, November 29, 2016. REUTERS/Jorge Silva 

People walk past a picture of Crown Prince Maha Vajiralongkorn displayed for sale at a royal memorabilia shop in Bangkok, Thailand, November 29, 2016. REUTERS/Jorge Silva 

A woman walks past a picture of Crown Prince Maha Vajiralongkorn displayed for sale at a royal memorabilia shop in Bangkok, Thailand, November 29, 2016. REUTERS/Jorge Silva