IN 1964, when I was 14 years old, my family was forced into exile. For most of his life my father, Joe Slovo, lived under the shadow of imprisonment and assassination. In 1982, my mother, Ruth First, was murdered by agents acting on behalf of the apartheid regime. Not surprisingly, I have ambivalent and complicated feelings about the country of my birth. Though I am grateful for the advantages of growing up and being educated in the UK, the sense of loss I have always felt, and the longing to be back under African skies, never went away. It is no coincidence that two of the films I have scripted are set in South Africa. When my citizenship was restored in 2005, and after 54 years away, I started to…