Because in the first 1350 years Muslims and Islam were dominant and Imperialistic, Muslim leaders did not attempt to deceive non Muslims by telling them that:
a) Islam means Peace
b) Allah is God (same as the God of the Bible)
c) Islam is a Religion
d) Jihad is a ‘spiritual’ struggle to commune with God
Unfortunately for Muslims in the 21^st century, the Internet, computers and mobiles can access information instantly at the click of a mouse hence it has become vital for Muslims to publicly and assiduously DECEIVE non Muslims/ Kuffar/ Infidels especially the hundreds of millions who are not willing to read let alone study Muhammad’s Quran.
We shall not refrain from repeating our warnings to wake up as many human beings to the existential threat posed by Muslims, Islam and Sharia to non Muslims/ Kuffar.
Ladies and gentlemen, believers and or unbelievers/ kuffar/ infidels/ non Muslims, be aware that the greatest threat to the exposure of the falsehood of Muhammad’s Quran are KNOWLEDGE of the Quran, Hadiths, the Hebrew Bible, the New Testament and related scriptures and history.
We have proven beyond a shadow or even a reasonable doubt the following:
a) Islam does not mean Peace but SUBMISSION
b) Allah is most definitely NOT the same as the God of the Bible
c) Islam is NOT a religion but a CULT; the Cult of Muhammad
d) Muhammad was NOT a prophet but a charlatan and the murderous leader of the first Organized Crime Syndicate in history
e) Jihad is NOT a spiritual struggle but Eternal & Mortal war against Infidels/ Kuffar/ Non Muslims
Almost every single Imam, Scholar or apologist for Islam would point out the Meccan earlier conciliatory verses of Muhammad’s Quran to ‘prove’ how peaceful Islam is. They never of course tell their Quran ignorant audience that these peace-making verses have been Abrogated/ made Invalid by the LATER verses of the Medina period.
One of the most important such deceptions is by quoting the following without telling the audience which verse it is:
“if anyone slew a person unless it be for murder or for spreading mischief in the land it would be as if he slew the whole people: and if anyone saved a life it would be as if he saved the life of the whole people”
Are they being truthful?
It gives us absolutely no pleasure whatsoever, to tell our audience again and again and again that like everything else that we have been showing regarding Muhammad, Islam and its followers, the above verse is misquoted with deliberate falsification to pretend to the mostly ignorant and trusting audience that Islam is a peaceful and peace loving belief system.
We heard this very verse recited by Iqbal Sakrani of the Muslim Council of Great Britain in public, in Trafalgar Square, in front of tens of millions of viewers AFTER the London suicide mass slaughter bombings on the 7^th July 2005.
This was in response to the fact, that the suicide bombers were young Muslims, raised, educated and taken care of by the tax paying people of Britain and in return, with typical LOVING ISLAM, they mass slaughtered innocent British civilians in the “Name of Allah”.
All of a sudden, the Muslim Council was galvanized into action to distance itself from such ‘barbaric acts’ and blame the mythical so called Radical Muslims for these misdeeds.
The very same Muslim Council, which NEVER demonstrated against any and all outrages committed in the name of Allah, Muhammad or Islam, anywhere and at any time in the world during the past decades, was then doing its utmost to pretend that it cared for the welfare of the people of Britain.
With their usual Deceitfulness, Iqbal Sakrani, Muhammad abd al Bari, Enayat Banglawala – all of whom are of none Arabic background –  and Tariq Ramadhan, as well as many other luminary Muslims, pretended to be outraged at these INSANE acts.
They then shed floods of crocodile tears in public, with the assistance and compliance of the stupid and criminally negligent British media and politicians.
We needed to give our readers this background especially for those who are NOT British.
Now, we shall address the Quranic verse above from Surat al Ma’idah which tells a mythical version of the Biblical story of Cain and Able AFTER Cain had murdered his brother.
We would like our audience to read very carefully the beginning of the verse which is actually the CRUX of this chapter: 
Al Ma’idah 5: 32 “On that account: We ordained for the Children of Israel, that if anyone slew a person unless it be for murder or for spreading mischief in the land, it would be as if he slew the whole people: and if anyone saved a life, it would be as if he saved the life of the whole people…”
This verse, like hundreds of others in the Quran, is plundered and perverted from the Bible and or from Jewish Rabbinic traditions.
This particular one is from Pirque Avot (Sayings of the Fathers) in the Mishna in the Talmud. 
Ladies and gentlemen, when the above verse is read in full, one would understand that it was Allah addressing the People of Israel and ONLY the People of Israel BUT neither Muhammad nor his Arab followers.
By deliberately, willfully and with deception aforethought cutting out
“We ordained for the Children of Israel — Iqbal Sakrani and all the others who quoted – and still quote – this truncated verse, changed the perception of the unwary listeners and made them believe that it is part of peaceful Islamic teachings.
That was and still is, the whole purpose and intent of Muslims and they have been and still are succeeding in their Deception and Fraudulence of the unwary.
If any of you needs further PROOF, you can look up hundreds upon hundreds of Muhammadan preachers on U tube who quote the Truncated, Edited or Perverted version ONLY of this verse!
If this action is NOT Dishonourable, what is?
Why would such educated and learned men, stoop to these abysmal levels of Hypocrisy and Mendacity if their Islam is  superior to ALL other beliefs?
Why would these Muslim luminaries need to Distort the Quranic verse if the Quran is as holy as they pretend it to be?
Is this NOT a deliberate alteration of Allah’s words?
Does this not constitute Blasphemy?
How can any of them justify such dishonesty both religious and intellectual?
How could they treat their listeners, so called Believers or Unbelievers with such CONTEMPT?
Since Muslims can do this shameless and systematic editing in the 21^st century, in front of tens of millions of people, then how dare they tell us that the Quran that we have today has never been altered in the last 1400 years?
They have been getting away with these Intellectual, Moral and Religious perversions because most human beings do not know the subjects at hand and hence are easily DUPED by well- dressed and well-spoken people whom they think are paragons of virtue and knowledge!
Well Ladies and gentlemen, they ARE NOT! As we have been demonstrating repeatedly in our series, using the very Muhammadan Arabic sources to PROVE the opposite?
The very internet that is used by the followers of Muhammad to propagate their messages of Hate, of War, of Superiority, of Racism and of Intellectual Fraud, is also Enlightening a mostly ignorant world about the real characteristics of Muhammadan Islam.
In fact, the internet shows all their DEPRAVED behaviours of Mass Murder, Kidnappings, Beheadings, Stoning to death, Genital Mutilation, Desecration of all kinds of Holy places etc etc perpetrated upon BOTH Unbelievers as well as other Believing sects of Muhammadan Islam.
Can any follower of Muhammad prove what we are revealing here as erroneous or mendacious?
We are not going to hold our breath since no so called ‘scholar’ of Islam would dare to even try disproving these facts. 
Islam thrives on Ignorance, Stupidity, Mendacity and Terror without which it would wither and die.