Chicago Bears' Pat McCaskey. (YouTube)

(CNSNews.com) -- The co-owner of the Chicago Bears, Pat McCaskey, will speak at the 2019 Chicago March for Life, joining an estimated 6,000 people who will gather in the Windy City on Sunday, January 13 to peacefully protest legalized abortion.

The announcement came as Bears fans are celebrating Sunday’s NFC North championship win – their first in eight years.

McCaskey has worked for the Bears since 1974, and has attended the Chicago March for Life every year for the past five years. He appeared onstage at the March last year, sporting a Bears hat and jacket, to read a poem for his “March for Life friends.”

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“God, give us friends who are March for Life friends, who will march for the right we adore,” McCaskey read.

“We must follow the voice of Jesus Christ from conception through a natural death,” he added, to cheers from the crowd.

This year, McCaskey will be joined onstage by Chicago March for Life Vice President Kevin Grillot, Chicago Archbishop Cardinal Blase J. Cupich, and Ryan Bomberger, founder of the pro-life Radiance Foundation.

The official theme for the 2019 March for Life is “Unique from Day One: Pro-Life is Pro-Science,” and will emphasize how science and medicine support the pro-life cause.

(Getty Images)

“Medical and technological advancements continue to reaffirm the science behind the pro-life cause – that life begins at fertilization, or day one, when egg meets sperm and a new, unique, human embryo is created,” according to the March for Life.

While Chicagoans will march on January 13, the national march will take place a few days later in Washington, D.C. on Friday, January 18.

The March for Life is the world’s largest annual human rights demonstration, according to its 2017-2018 annual report. It has taken place every year since January 22, 1974, when the first march was held on the first anniversary of Roe v. Wade, the infamous 1973 Supreme Court decision that legalized abortion throughout the entire United States.

Since Roe v. Wade, an estimated 60 million babies have been killed by abortion in the United States.