Probably based on the Great Purge of Grigory Zinoviev, Lev Kamenev, Nikolai Bukharin, and Alexei Rykov.
pɹˈɑːbəbli bˈeɪst ɔnðə ɡɹˈeɪt pˈɜːdʒ ʌv ɡɹˈɪɡɚɹi zˈɪnoʊvˌiːv, lˈɛv kˈeɪmnɛv, nˈɪkəlˌaɪ bˈʌkɑːɹɹˌɪn, ænd ɐlˈɛkseɪ ɹˈaɪkɑːv.