Until the advent of materialism and 19th c. dogma, Western Civilisation was superior to anything Islam had developed. Islam has not aided in the development of the modern world; in fact civilisation has only been created in spite of Islam. Proof of this resides in the 'modern' world and the unending political-economic and spiritual poverty of Muslim states and regions. Squatting on richer civilisations is not 'progress'. Islam is pagan, totalitarian, and irrational.
The cult of Muhammad is akin to the European Union or the endless surfeit of ‘International Organisations’. One can enter, but never leave. The Hotel California ethos applied to social control and societal regulation. Apostasy or renouncing any aspect of the Muhammadan cult’s doctrine, is punishable by death, according to Sharia barbarism (called a ‘Law’ by the dis-informers). No such demand exists in Christianity where the faithful can leave and even re-enter the Church based on their own free-will choice and belief system.
In the Qu’ran, those who leave or are insufficiently pious, are labelled as Munafiqun. A Munafiqun identifies someone who does not believe, or does not follow the dictates of the cult with enough purity and piety. Another name the Qur’an uses for such people is 'hypocrite' and this word is also applied to Christians and Jews who object to the cult doctrines of Muhammad or criticise any aspect of Muhammadan teaching. Munafiqun as a pejorative, targets and isolates a Moslem who does not follow the totality of Muhammadan-Sharia fascism, or Bronze-age ideals and Muhammadan contract law, named by Western Dhimmis as a legal code.
The concept of being a ‘Hyprocrite’, or someone who was a danger to the purity of the Muhammadan project appears quite early in the Qu’ranic records. They are viewed as a ‘5th column’ or elements within a uniform Muhammadan society which pose a threat to unity and obedience. In early Islamic history the term Munafiqun is applied to a fairly specific group of cult followers in a place called Madna who nominally accepted the authority of Muhammad whilst working in various covert and overt ways to hinder his mission [see Joseph Lumbard, “Islam Fundamentalism and the Betrayal of Tradition”]. The ‘impure’ followers in Madna and elsewhere were of course crushed and destroyed.
The allusion to hypocrites and the need to kill them abounds in the Koran and the Hadith. They are as dangerous and satanic as the Jews or Christians. The Muhammadan cult cannot survive unless the Munafiqun are purged.
3:116 Surely, those who reject Faith (disbelieve in Muhammad SAW as being Allah's Prophet and in all that which he has brought from Allah), neither their properties, nor their offspring will avail them aught against Allah. They are the dwellers of the Fire, therein they will abide. (Tafsir AtTabari, Vol. 4, Page 58).
2:27 Those who break Allah's Covenant after ratifying it, and sever what Allah has ordered to be joined (as regards Allah's Religion of Islamic Monotheism, and to practise its legal laws on the earth and also as regards keeping good relations with kith and kin), and do mischief on earth, it is they who are the losers.
4:138 Give to the hypocrites the tidings that there is for them a painful torment.
66:9 O Prophet (Muhammad SAW)! Strive hard against the disbelievers and the hypocrites, and be severe against them, their abode will be Hell, and worst indeed is that destination.
Apostasy is punishable by death. Munafiqun is a form of apostasy. You pretend to follow Mein Muhammad, but in your private life you don't and are 'striving' against the cult, 'doing mischief'. Sura 5:33 is very clear that those who 'do mischief' can be killed, executed, humiliated and crucified.
This is why Moslems the world-over will kill anyone they believe is disobeying the Koran, including their own family members or other Muslim sects they deem to be unorthodox or who do not follow Koranic demands without modification or doubt.