 The manager in charge of hiring the extras to shoot a scene in the  Palais De Justice (Superior court) in Brussels in lieu of the Paris  railroad station gave away a fixed number of tickets and requested  the ticket holders to come back for work around midnight. Some of  the left wing activists (socialists) bought a roll of the identical  tickets and passed them out to mostly students from the nearby  University (U.L.B) and asked them to show up before midnight.  Because they were there early, they were able to get into the court  house with no problem. They were given costumes almost right away,  and when the real extras showed up, the guys in charge were puzzled  that there were so many in line considering that the huge hall was  already half full. It took them minutes before they figured that  they had been fooled and outsmarted by the local activists. They  were forced to turn away those who had the phony tickets and accept  only few of the legitimate hired extras.