Boo! People around the world are celebrating the annual Halloween holiday in spooky style.

People in the United States sported all sorts of ghostly costumes, including those that made them resemble ghouls, goblins and the two presidential candidates. 

In Berlin, a crowd of zombie dancers appeared in the city center.

It seems people in Tokyo are a bit more tame.

"I having been doing it for about five years and every year I think up a new costume. It's exciting to change what you look like and play a different character. The preparations are the best bit and then really living out the role and dancing with everyone here," said Jeanette Schwabe, Flashmob participant.