Participants in costume take part in a walk for World Zombie Day 2017, on Place de la Republique in Paris, France, 07 October 2017. More than 50 cities worldwide participate in the worldwide horror festival in which revellers dress up as zombie-related characters. (Photo by Ian Langsdon/EPA/EFE)





Participants dressed up as Zombies wandering through London on a pub crawl for World Zombie Day in aid of homeless charity St. Mungos World Zombie Day charity pub crawl, London, U.K. on October 7, 2017. (Photo by Paul Brown/Rex Features/Shutterstock)





Participants in costume take part in a walk for World Zombie Day 2017, on Place de la Republique in Paris, France, 07 October 2017. (Photo by Ian Langsdon/EPA/EFE)





Participants in costume take part in a walk for World Zombie Day 2017, on Place de la Republique in Paris, France, 07 October 2017. (Photo by Ian Langsdon/EPA/EFE)





Participants in costume take part in a walk for World Zombie Day 2017, on Place de la Republique in Paris, France, 07 October 2017. (Photo by Ian Langsdon/EPA/EFE)





People wearing costumes pose for a “selfie” photograph as they gather at a bus stop before participating in a “Zombie Walk” on World Zombie Day, in London on October 7, 2017. (Photo by Tolga Akmen/AFP Photo)





Participants dressed up as Zombies wandering through London on a pub crawl for World Zombie Day in aid of homeless charity St. Mungos World Zombie Day charity pub crawl, London, U.K. on October 7, 2017. (Photo by Paul Brown/Rex Features/Shutterstock)





People wearing costumes pose for a photograph as they gather before participating in a “Zombie Walk” on World Zombie Day, in London on October 7, 2017. (Photo by Tolga Akmen/AFP Photo)





A man dressed as a zombie participates in a walk for World Zombie Day 2017 on Place de la Republique in Paris, France, 07 October 2017. (Photo by Ian Langsdon/EPA/EFE)





People wearing costumes gather at a bus stop before participating in a “Zombie Walk” on World Zombie Day, in London on October 7, 2017. (Photo by Tolga Akmen/AFP Photo)





Participants in costume take part in a walk for World Zombie Day 2017, on Place de la Republique in Paris, France, 07 October 2017. (Photo by Ian Langsdon/EPA/EFE)





A participant checks theuir costume before taking part in a in a “Zombie Walk” on World Zombie Day, in London on October 7, 2017. (Photo by Tolga Akmen/AFP Photo)





A participant checks theuir costume before taking part in a in a “Zombie Walk” on World Zombie Day, in London on October 7, 2017. (Photo by Tolga Akmen/AFP Photo)