Monday's Martin Luther King Jr. Day coincided with the first celebration of Muhammad Ali Day in Illinois on what would have been the champion boxer and civil rights activist's 80th birthday.

Monday marks not only Martin Luther King Day but in Illinois, it will also recognize the first Muhammad Ali Day. To celebrate, the Illinois Muslim Civic Coalition will host a virtual event honoring the boxing legend, featuring speakers including the Rev. Jesse Jackson and Ali’s daughter Maryum Ali.

At an early age he identified himself as “The Greatest” and backed up his words inside and out of the boxing ring. Filmmaker Ken Burns joins “Black Voices” to discuss the sweeping new four-part documentary “Muhammad Ali.”

He was bigger than boxing and larger than life — a true icon of the 20th century. Filmmaker Ken Burns and Donald Lassere of the Chicago History Museum join us to discuss the sweeping new four-part documentary on the life and legacy of Muhammad Ali.

A Chicago author tackles the complex life of Muhammad Ali in a new biography with some fascinating revelations.

For more than 20 years, researchers at Northwestern University have collaborated with a global network of scientists to try and unravel the mysteries of Parkinson's disease. A study published this month in Nature Genetics shares an important discovery from that research.

A Muslim prayer service was held Thursday to honor the boxer in his hometown of Louisville, Kentucky. As part of a Nation of Islam delegation, Salim Muwakkil met Muhammad Ali in Kingston, Jamaica in 1974.