Malcolm X was a civil rights leader. His family suffered badly at the hands of the KKK who burned down his house and a related group probably murdered his father. Malcolm X sometimes advocated violence, it's can at times be unclear who is a freedom fighter and who is a terrorist. Malcolm X was involved with the Nation of Islam but later converted to mainstream Islam. He was shot dead in 1965.
After the murder of President John F. Kennedy, Malcolm X had the gall to say that it was chickens coming home to roost. Malcolm X went to Mecca and found Muslims of many different races (Asian, black, white, Arab, Indian, Oceanic, etc.) which improved him. Unfortunately, Nation of Islam members killed him.