Josef Krzystyniak marches with a flag during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Jakub Maka, 5, holds onto a Polish flag during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Polish flags are waved on a float during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Mateusz Szwab, center, 15, of Chicago, watches the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Parade goers march during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Children march with a group from the Southwest Center of Polish Dancing during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Maja Szlembarski, 3, holds an American flag during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Costumed dancers perform during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

Flags are waved from the Polvision float during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

The crowd watches the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media

World War Two reenactors depicting Polish soldiers ride in period vehicles during the Polish Constitution Day Parade along Columbus Drive in Chicago, Ill., on Saturday, May 4, 2013. | Andrew A. Nelles~Sun-Times Media