Karim Hirji, a Tanzanian student, was in a good mood when he went to bed on the 10 July 1969. That evening he had heard the most impressive lecture of his life at the University of Dar es Salaam. The lecture was on the Cuban Revolution and its relevance to Africa. Back in his dorm, he praised the speaker in his diary: “one could almost feel the strong conviction and deep emotions from which he spoke”. The man he admired and later befriended was Dr Walter Rodney.