French police check people's papers to ensure they aren't spies.
Full title reads: "Anti-Fifth Column Drive In Paris".
VS of police in uniform and in civilian clothes checking the papers of people sitting in the cafes and also people walking along the boulevards of Paris.
MSs. of police stopping cars and checking the papers of the occupants.
VS of a private car rushing through one of the police checks without stopping, motorcycle police chase after him and stop him further up the road where they check his papers and eventually allow him to continue.