CHICAGO (CBS) —  It was bumper-to-bumper traffic as people throughout the area celebrated Mexican Independence Day.

Some waved Mexican flags from their cars while others honked their horns as they rode down the expressway.

READ MORE: Student And Staff Data From Area School District Were Dumped On The Dark Web, And Parents And Staffers Had No Clue

According to the Pew Research Center, more than a million and a half people of Mexican descent live in the Chicago area.

While often confused with another popular holiday, Cinco de Mayo, Mexican Independence Day was established in 1810 and is celebrated on September 16.

READ MORE: Chicago Weather: Cold Front On The Way

It was a priest, Miguel Hidalgo, who led Mexicans to demand independence from Spain.

 

MORE NEWS: Protesters Say Benet Academy In Lisle Rescinded Lacrosse Coach's Job Offer Because She Is A Lesbian