A leftwing activist who played a Prominent role in the 2011 uprising against Hosni Mubarak stands trial on Sunday amid a *****down on protests by Egypt's new military-installed regime. Alaa Abdel Fattah, who also opposed Mubarak's deposed Islamist successor Mohamed Morsi, is charged with taking part in an unauthorised and violent protest along with 24 co-defendants. The authorities have banned all but police-sanctioned protests and arrested thousands of activists, mostly Islamists, in Egypt's most extensive *****down on opposition in decades.