I want to add something to clarify a point. We Muslims always fell oppressed and wronged. Oppression always produces an angry generation this is a rule and nobody can deny. We see our innocent armless sisters and brothers have been killed , especially the start point is Palestine, since 1948 our innocent sisters and brothers are killed and tortured and jailed. There are many massacres committed in front all of the world. What do you think our reaction would be? Do you "expect us to throw our arms up in joy" and sit down looking?! Those wars, fights and conflicts always produce an angry generation. Those countries who back and defend Israel must think that their policy makes some angry while some others happy. I do not like to be involved in politics, but you can see it is half politic and half religion.
In Islam killing of civilians is never justified. Christians and Jew lived during the Islam civilization very peacefully with Muslims and this truth is undeniable. I am not with killing innocent people never whatever his or her religion or nationality is. Of course if those past events were committed by Muslims we know very well what the world has said about us, but since it is by the follower of other religions justifications are prepared.

Two wrongs do not make a right. To be a Christian is to be persecuted, maybe you should google how many Christians are persecuted in the world each year and where. Muslims do not have the monopoly on suffering or injustice. Anger and hate two of the most destructive emotions of mankind.

Christ taught we should love our enemies and turn the other cheek. This must be one of the hardest lessons He taught knowing the nature of mankind. Yet to succeed in this must be the most rewarding and surely brings one closer to God. "Vengeance is mine sayeth The Lord " I have confidence in Gods supreme justice and mercy to right the wrongs where it matters.. Not the here and now.. But eternity.