Armed Islamic Group of Algeria
There is general agreement among Muslims that the takfir and mass killings of alleged apostates perpetrated not only by ISIL but also by the Armed Islamic Group of Algeria and Abu Musab al-Zarqawi's jihadis were wrong, but there is less unanimity in other cases, such as what to do in a situation where self-professed Muslim(s) — post-modernist academic Nasr Abu Zayd or the Ahmadiyya movement — disagree with their accusers on an important doctrinal point. (Ahmadi quote a Muslim journalist, Abdul-Majeed Salik, claiming that, "all great and eminent Muslims in the history of Islam as well as all the sects in the Muslim world are considered to be disbelievers, apostates, and outside the pale of Islam according to one or the other group of religious leaders".)