wˌɛn mˈæzoʊɚ bɪɡˈæn tə ɹˈaɪt hɪz bˈʊk wʌt juː dɪdnˌɑːt tˈɛl: ɐ ɹˈʌʃən pˈæst ænd ðə dʒˈɜːni hˈoʊm, hiː dɪskˈʌvɚd ðæt hɪz ɡɹˈændfɑːðɚ, mˈæks, wʌzɐ mˈɛmbɚɹ ʌvðə bˈʌnd, ɐ dʒˈuːɪʃ sˈoʊʃəlˌɪst pˈɑːɹɾi, wʌz ɪnvˈɑːlvd ɪn ɹˌɛvəlˈuːʃənˌɛɹi æktˈɪvᵻɾiz, ænd hˈɛlpt pɹˈɪnt ɪlˈiːɡəl bˈʊks ɪn jˈɪdɪʃ ˈædvəkˌeɪɾɪŋ sˈoʊʃəlˌɪzəm.
When Mazower began to write his book What You Did Not Tell: A Russian Past and the Journey Home, he discovered that his grandfather, Max, was a member of the Bund, a Jewish socialist party, was involved in revolutionary activities, and helped print illegal books in Yiddish advocating socialism.