CHICAGO (CBS) — Visitation was held Sunday for Dr. Conrad Worrill, an African-American leader in civil rights and education.

Worrill passed away on Wednesday, June 3. He was 78.

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Cook County Board President Toni Preckwinkle was among the many who came out Sunday to pay their respects.

Dr. Worrill was a hero to many – having worked tirelessly to help young people.

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He joined the Inner Cities Studies – later Urban Communities Studies – faculty at Northeastern Illinois University in 1976 and taught at the university for more than 40 years.

Dr. Worrill was also chairman of the National Black United Front, a consultant for the Million Man March in 1995, and a participant in the United Nations World Conference Against Racism in 2001.

Dr. Worrill also hosted a show on WVON radio.

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A private funeral is scheduled for Monday.