Al-Dosari has been based in London since 2003 in self-imposed exile, where he has operated his
YouTube-based talk show since 2015. In his talk show, al-Dosari criticizes the
Saudi royal family, in particular King Salman and Crown Prince Mohammad, whom he labels as "Salmanco" (referring to the methods exercised by the King in managing the country in a fashion similar to a company or as personal possession) and "al-Dub al-Dasher" (fat crumpet) respectively in a humorous manner, "exposes secrets" related to the royal family, and calls for protests against the Saudi government. Al-Dosari had spearheaded a protest movement known as "September 15 Movement" that took place throughout Saudi Arabia on September 15, 2017, which has been described as having a "huge following". The demonstrations called for by al-Dosari come at a stage where the current
crisis with Qatar had allowed opponents to rally unprecedented support with which they have never before been able to assemble, which may be the cause of the nervousness of authorities towards the protests. Up to twenty prominent clergymen such as
Salman al-Ouda and
Awadh al-Qarni had been arrested due to being perceived as "pro-Doha" and a large following in social networks which the Saudi government feared would be utilized to support the protests called for by al-Dosari. Numerous leading clerics linked to the Saudi state such as Grand Mufti
Abdul-Aziz ibn Abdullah Al ash-Sheikh and
Saleh Al Maghamsi have criticized al-Dosari's movement and called for Saudi citizens to strongly oppose it. As of 14 September 2017, al-Dosari had around 424,000 followers on Twitter and hundreds of thousands to millions of views on his YouTube videos. On 24 October 2018, in response to the
assassination of Jamal Khashoggi, al-Dosari and twelve others protested in front of the Saudi Arabian embassy in London, displaying "Justice for Jamal" banners, chanting calls for finding Khashoggi's body, and claiming that Mohammad bin Salman was responsible for the killing. Al-Dosari said that he was not deterred by the assassination. ==Harassment and beating==