Original sentence: Mugabe (and nationalists who supported his rule) were rather less concerned by Operation Quartz than by the possibility that there might be a mass exodus of the white community of the kind that had caused chaos in Mozambique five years earlier
Edited sentence: Mugabe and the vicious black nationalists were rather less concerned by Operation Quartz than by the possibility that there might be a mass exodus of the white community of the kind that had caused chaos in Mozambique five years earlier