Outside St. Peter's entryway, people are checked to see if they are not wearing clothing that is 'too revealing'. Short T-Shirts, miniskirts, etc. are all banned and people wishing to enter the basilica must wear clothes that cover them properly. As you can see, this causes a considerable congestion problem! At the top left you can also see a helicopter, this is a police helicopter patrolling the area making sure that the traffic is flowing, etc.
Canon EOS 500, Canon 35-80 f/4-5.6 III, Fujichrome Sensia 100 ISO