A participant wearing a costume and make-up attends a Halloween parade at Walibi park in Wavre, Belgium, October 31, 2019. REUTERS/Yves Herman TPX IMAGES OF THE DAY

People in costume gather in Union Square after the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

A passenger wearing Halloween make-up sits on a bus as the bus is stopped by anti-government protesters during a protest on Halloween day in Hong Kong, China October 31, 2019. REUTERS/Kim Kyung-Hoon

A man dressed as Britain's Prime Minister Boris Johnson is seen during the "End of the World Party" on the night Britain was due to leave the EU in London, Britain October 31, 2019. REUTERS/Yara Nardi

A man in costume takes the subway to the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

A participant wearing a costume and make-up attends a Halloween parade at Walibi park in Wavre, Belgium, October 31, 2019. REUTERS/Yves Herman

Winter triumphs over Summer at the Samhuinn Fire Festival at Calton Hill Edinburgh.Scotland, Britain October 31, 2019. REUTERS/Russell Cheyne

People in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

People in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

Anti-government protesters wear Guy Fawkes masks during a Halloween march in Lan Kwai Fong, Central district, Hong Kong, China October 31, 2019. REUTERS/Tyrone Siu

People in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

People in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

Winter triumphs over Summer at the Samhuinn Fire Festival at Calton Hill Edinburgh.Scotland, Britain October 31, 2019. REUTERS/Russell Cheyne

A kid dressed as the Joker is pictured during Halloween celebrations in La Paz, Bolivia, October 31, 2019. REUTERS/Kai Pfaffenbach

A child dressed in costume for Halloween crosses through Times Square during the evening rush in Manhattan, in New York City, U.S., October 31, 2019. REUTERS/Brendan McDermid

A person paints a child's face during Halloween celebrations in La Paz, Bolivia, October 31, 2019. REUTERS/Kai Pfaffenbach

A participant wearing a costume and make-up attends a Halloween parade at Walibi park in Wavre, Belgium, October 25, 2019. REUTERS/Yves Herman

A person dressed up as a zombie attends a zombie walk on Halloween in Essen, Germany, October 31, 2019. REUTERS/Leon Kuegeler

Participants attend a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A participant wearing a costume and make-up attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

Participants dressed as zombies take part in a "Zombie Walk" parade to celebrate upcoming Halloween in Kiev, Ukraine October 26, 2019. REUTERS/Gleb Garanich

A participant wearing a costume and make-up attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A person dressed up as a zombie attends a "zombie walk" on Halloween in Essen, Germany, October 31, 2019. REUTERS/Leon Kuegeler

A person dressed up as a zombie attends a "zombie walk" on Halloween in Essen, Germany, October 31, 2019. REUTERS/Leon Kuegeler

A person dressed up as a zombie attends a "zombie walk" on Halloween in Essen, Germany, October 31, 2019. REUTERS/Leon Kuegeler

A participant takes part in a "Zombie Walk" parade to celebrate upcoming Halloween in Kiev, Ukraine October 26, 2019. REUTERS/Gleb Garanich

Participants wearing costumes attend a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A participant wearing a costume attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

Participants wearing costumes attend a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A participant wearing a costume and make-up attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A participant wearing a costume and make-up attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

A participant wearing a costume and make-up attends a Halloween parade at Walibi park in Wavre, Belgium, October 25, 2019. REUTERS/Yves Herman

People dressed as cows walk toward the Tompkins Square Halloween Dog Parade in Manhattan, New York City, U.S., October 20, 2019. REUTERS/Andrew Kelly TPX IMAGES OF THE DAY

An audience watches as people in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

People in costume participate in the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., October 31, 2019. REUTERS/Yana Paskova

A man dressed in costume for Halloween walks through Times Square during the evening rush in Manhattan, in New York City, U.S., October 31, 2019. REUTERS/Brendan McDermid

A woman in costume walks to the L train after the 46th Annual Village Halloween Parade in Manhattan, New York City, U.S., November 1, 2019. REUTERS/Yana Paskova