Women eat next to a fake skeleton ahead of a Halloween parade at Happy Valley park in Beijing, China, October 31, 2016. (Photo by Jason Lee/Reuters)





A fake skeleton is seen on a bench during a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





A man poses for a photo while kissing a fake skeleton ahead of a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





Men arrive to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





A woman takes a photo of a fake skeleton ahead of a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





Performers wait to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





A man arrives to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





Performers wait to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





Performers wait to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





A woman takes a selfie with a performer during a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





Performers wait to attend a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





People stand around a fake skeleton ahead of a Halloween parade at Happy Valley park in Beijing, China October 31, 2016. (Photo by Jason Lee/Reuters)





A Muslim woman poses for a picture with a zombie bride during a so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





A man takes a selfie with a zombie bride during the so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





Revellers pose for pictures during the so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





A tourist poses with a man dressed as a zombie during the so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





A tourist poses with a woman dressed as a zombie during the so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





Zombie bride Fenia Luepkes from the western German city of Bochum poses for a selfie during the so-called “Zombie walk” through the western German city of Essen on Halloween Day, October 31, 2016. (Photo by Wolfgang Rattay/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during the Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Members of street performance troupe Macnas participate in their 30th anniversary during the Halloween parade called Savage Grace in Galway, Ireland October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Members of street performance troupe Macnas participate in their 30th anniversary during the Halloween parade called Savage Grace in Galway, Ireland October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during the Halloween parade called Savage Grace in Galway, Ireland October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Members of street performance troupe Macnas participate in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Members of street performance troupe Macnas participate in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A member of street performance troupe Macnas participates in their 30th anniversary during Halloween parade called Savage Grace in Galway, Ireland, October 30, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Participants take part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants line up at the start of a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





A participant takes part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants take part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants pose for a selfie before the start of a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants take part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants take part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





Participants take part in a Trick or Treat halloween fun run in Richmond Park, London, Britain October 30, 2016. (Photo by Peter Nicholls/Reuters)





A participant in costume takes part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants dressed as zombies take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





A participant wearing a pumpkin on his head runs along a street as he takes part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





Participants take part in a Zombie Walk parade during Halloween celebrations in Kiev, Ukraine October 30, 2016. (Photo by Valentyn Ogirenko/Reuters)





A boy wears a mask of Republican U.S. presidential nominee Donald Trump as he marches in the annual Nyack Halloween Parade in the Village of Nyack, New York, U.S., October 29, 2016. (Photo by Mike Segar/Reuters)





A woman in costume carries a pumpkin in the annual Nyack Halloween Parade in the Village of Nyack, New York, U.S., October 29, 2016. (Photo by Mike Segar/Reuters)





A boy dressed as a Republican U.S. presidential nominee Donald Trump marches in the annual Nyack Halloween Parade in the Village of Nyack, New York, U.S., October 29, 2016. (Photo by Mike Segar/Reuters)





A man dressed as a “Donald Trump pig” marches in the annual Nyack Halloween Parade in the Village of Nyack, New York, U.S., October 29, 2016. (Photo by Mike Segar/Reuters)





A little boy Zombie with a stake through his chest takes part in the annual Silver Spring Zombie Walk in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





Mother and daughter Zombies take part in the annual Silver Spring Zombie Walk before Halloween in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





A businessman Zombie clamors for wig mannequins during the annual Silver Spring Zombie Walk before Halloween in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





School lunch lady Zombies take part in the annual Silver Spring Zombie Walk before Halloween in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





A cat lady in curlers Zombie (R) takes part in the annual Silver Spring Zombie Walk before Halloween in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





Zombies clamor for wig mannequins during the annual Silver Spring Zombie Walk before Halloween in Silver Spring, Maryland, U.S., October 29, 2016. (Photo by Gary Cameron/Reuters)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi) -





A parade participant marches during the 43rd Annual Greenwich Village Halloween Parade in New York, New York, USA, 31 October 2016. (Photo by Jason Szenes/EPA)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi)





The 2016 Greenwich Village Halloween parade, October 31, 2016 in the Manhattan borough of New York City. (Photo by Anthony Causi)