Truth you should know, that echos inside the heart of majority of muslims about Terrorism, Islam & Quran
1) Muslims have roundly condemned these vile criminal acts and terrorism in general

2) Terrorists represent Islam no more than the KKK represents Christianity or other fringe groups represent their respective traditions or cults
3) Islam unambiguously opposes terror tactics -- terrorism is not a religious ritual but a military strategy
4) Muslims are the main victims of terrorists
5) Terrorism is not a 'Muslim thing'
6) Muslims follow a religion of peace, mercy, and forgiveness, and the majority have nothing to do with the extremely grave events which have come to be associated with their faith
7)The Quran is Wisdom Conclusive. It neither condemns nor tortures the flesh nor does it neglect the soul. It does not humanize God, nor does it deify man.
8) Quran speaks to all of mankind on a general basis without regard to race, tribe, color, social position, financial condition or genealogy
9) The word "Allah" is the perfect description of the "One God" of monotheism for Jews, Christians and Muslims! "Allah" is the same word used by Christian Arabs and Jewish Arabs in their Bible, centuries before Islam came. On page one… (more) [1] of Genesis in the Old Testament, we find the word "Allah" seventeen [17] times.
10) In Islam, Allah is completely in control of all things and ordains all things that occur.

“Common sense is not so common.” -Voltaire

In Frederick studies, He gave people simple problems to solve, like this one:
Q: A bat and ball cost a dollar and ten cents. The bat costs a dollar more than the ball. How much does the ball cost?

Frederick found that some people have the tendency to confidently blurt out the wrong answer, stating that the ball costs ten cents.

You, of course, knew that the correct answer is that the ball costs five cents, and you’re completely justified if you’re wondering if the, well, less-than-smart people were the ones blurting out the wrong answer.
I feel sorry for some of the north American & their political leaders, who are as being so smart blureting out the wrong answer, when terrorist strike Paris.

Instead of finding the route of terrorist and terrorist group, call out Islam - a religion of peace is the main problem of terrorism. Media also smartly plays and echos with them.
Remember if your heart knowingly or unknowning create sin, you will be liable to your Lord for the sin you create. Sin like memory will always stick to you body and mind.

Before commit sin ask your heart, do you truly like to become abuser or being abused by others. As we know abuser and being abused both are equally guailty by the command of Lord.