Witness to a tragedy on a boat to Spain, Moustapha Diouf has made it his mission to persuade young people not to emigrate from Senegal, but even he concedes that itâs getting harder to make his case.Witness to a tragedy on a boat to Spain, Moustapha Diouf has made it his mission to persuade young people not to emigrate from Senegal, but even he concedes that itâs getting harder to make his case.