Masked people pose in St. Mark's Square on the occasion of the Venice Carnival, in Venice, Italy, Saturday, January 30, 2016. People attended the Venice Carnival, celebrated Saturday under heightened security following the sexual assaults on New Year's Eve in Cologne and the ongoing terror threat in Europe. Authorities have increased surveillance throughout the city, including the number of officers on patrol, both under-cover and in uniform. (Photo by Andrea Merola/ANSA via AP Photo)





Masked revellers take pictures during the Venice Carnival, Italy January 29, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose during the Venice Carnival, in San Marco Piazza January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller (L) is pictured by tourists during the Venice Carnival, in San Marco Piazza January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose during the Venice Carnival, in Piazza San Marco January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose in front of the Caffe Florian coffee shop in San Marco Piazza during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose during the Venice Carnival, in San Marco Piazza January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses in front of the Ponte dei Sospiri (Bridge of Sighs) during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A tourist takes a picture of masked revellers (R) standing in front of the Ponte dei Sospiri (Bridge of Sighs) during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose during the Venice Carnival, in San Marco Piazza January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses during the Venice Carnival, in San Marco Piazza January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A gondolier rows along a canal near St. Mark's Square in Venice January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Gondoliers row along a canal near St. Mark's Square in Venice January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A gondola is seen along a canal near St. Mark's Square in Venice, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A gondolier rows along a canal near St. Mark's Square in Venice January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





The traditional “Marie”, women wearing historical costumes, are carried during the “Festa delle Marie” procession in San Marco Square during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





The traditional “Marie”, women wearing historical costumes, are carried during the “Festa delle Marie” procession in San Marco Square during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





The traditional “Marie”, women wearing historical costumes, are carried during the “Festa delle Marie” procession in San Marco Square during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





The traditional “Marie”, women wearing historical costumes, are carried during the “Festa delle Marie” procession in San Marco Square during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller (R) poses in San Marco Piazza next to Italian Finance Police personnel during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





The traditional “Marie”, women wearing historical costumes, are carried during the “Festa delle Marie” procession in San Marco Square during the Venice Carnival January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses in San Marco Piazza during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller poses in San Marco Piazza during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose in San Marco Piazza during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





A masked reveller (R) poses in San Marco Piazza during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)





Masked revellers pose with their drinks in San Marco Piazza during the Venice Carnival, January 30, 2016. (Photo by Alessandro Bianchi/Reuters)