 The 10 September 2017 arrests of Salman al-Ouda, Abdullah al-Maliki, Essam al-Zamel and other academics, intellectuals, media professionals and religious leaders constituted the first wave.The second wave was the 2017 Saudi Arabian purge that started on 4 November 2017, in which several hundred prominent Saudi Arabian princes, government ministers, and business people were detained.ALQST defined the third wave as the 2018 crackdown on women involved in the women to drive movement and the anti male-guardianship campaign and their male supporters.