A self-exiled Egyptian businessman said he was quitting politics after his calls for protests against President Abdelfattah al-Sisi to mark the anniversary of Egypt's 2011 uprising went unheeded. Mohamed Ali, a construction contractor and fledgling actor, burst onto Egypt's political scene in recent months when videos he posted on social media accusing Sisi and the military elite of corruption went viral. Amassing millions of views in Egypt, Ali's videos sparked ...