After returning in the mid-1980s , he became an active member of the Muslim Brotherhood .
After the then president Anwar Sadat 's assassination in 1981 , el - Shater was exiled as an Islamist dissident , and left for England .
After returning in the mid-1980s , el - Shater became an active member of the Muslim Brotherhood .
After the then president Anwar Sadat 's assassination in 1981 , el - Shater was exiled as an Islamist dissident , and left for England .