The Polish Constitution Day Parade in Chicago is the largest Polish parade outside of Poland, and celebrates the anniversary of the ratification of the Polish Constitution of May 3, 1791, which historian Norman Davies calls "the first constitution of its kind in Europe".
For 115 years, Polonia's various community organizations have come together to organize this traditional Chicago salute to pride and tradition. Every year the parade is held on the Saturday closest to the third day of May. The main organizer of the Parade is the Association of Polish Clubs, under whose leadership the Grand Marshal and Queen of the Parade are elected. Organizers allocate than places in the marching column to all participants (like organizations, schools, bands, folk dancing groups). The parade has also been an occasion that both local and national politicians have used to curry favor with Chicago Polonia, or Polish community. Most notably Robert Kennedy attended the festivities on May 7 of 1961 along with attending mass at Holy Trinity Polish Mission before the parade.
The very first Parade took place in 1892 in Humboldt Park, which - at the time - was located in the heart of Polish Downtown. After World War II the parade was moved to downtown, first to State Street, then to Dearborn Street, and finally - from 2003 - to Grant Park. Every year the Parade starts from the location of Buckingham Fountain and ends by the bridge over the Chicago River.
Chicago's Polonia, the largest Polish community outside Warsaw proudly participate in the Parade in Downtown Chicago. During the Parade in 2006, 144 marching groups participated with an audience of - according to various sources - between 60 and 140 thousand people.