LONDON, ENGLAND - MARCH 05:  A group of Orthodox Jewish men and boys leave a house after praying during the Jewish holiday of Purim on March 5, 2015 in London, England. The annual Purim holiday is celebrated by Jewish communities around the world with parades and costume parties. The Biblical Book of Esther recorded the deliverance of the Jewish people from a plot to exterminate them in the ancient Persian empire 2,500 years ago and continues to be celebrated today.  (Photo by Dan Kitwood/Getty Images)