With the anniversary of the murder of Malcolm X coming up on February 21, the short-lived and scintillating friendship which the black liberation firebrand – and, later, champion of pan-Africanism –enjoyed with a young and unapologetically black Muhammad Ali in the early 1960s still stands as the most powerful refutation of the mantra that sport and politics should not mix.

Theirs was a friendship between two men who were the living antithesis of Goethe’s admonition that: “None are more hopelessly enslaved than those who falsely believe they are free.” Neither Malcolm nor Ali had any illusions that they or their people were free in America, and both were intent on making sure everybody knew it, no matter the consequences.

While the relationship they enjoyed may have exploded into public consciousness immediately after Ali’s (still then Cassius Clay) stunning victory over Sonny Liston in Miami on February 25 1964, Clay first encountered Malcolm at a Nation of Islam rally in Detroit in June 1962, where he spoke on a platform alongside the organisation’s leader, Elijah Muhammad.