All modern-day extremists (groups and individuals) are detractors from and disputants to orthodox Islam and though many are now being identified as "Salafis", despite the fact that they are followers of the ideologies of extremists such as Sayyid Qutb, Abu A'la Mawdudi and Taqi al-Din al-Nabahani, all of whom are from the Sufi, Ashari, Maturidi tradition and were strongly influenced by Marxist, Socialist, Communist ideologies, which they mixed with their tainted knowledge of Islam. The main import of their writings is excommunication of all contemporary Muslim societies and calling for violent revolutions to topple all current ruling authorities. This gave birth to the takfiri Kharijite movements that appeared in Egypt and spread to other lands from the 1960s onwards, and eventually their ideologies showed upon the West.