A Wikipedia webpage listing terror groups throughout the world counts no less than 112 Islamic terror groups.
Islam was started by Muhammed, a tribal warrior seeking revenge and treasure from fellow tribes, and within a very short time, its vanquishing hordes washed through Europe, imposing their own form of religious law and subjecting those conquered to a choice of conversion or servitude. It is laughable that Muslims now blame the Crusades for their bloodthirsty ways today.
The Crusades were simply a retaking of formerly held lands from the Muslim marauders, but for some reason much of the Western world accepts the claim that the Crusades were the height of evil and vicious treatment of a peaceful, religious people who only wanted to share their beliefs with the infidels of the West. Islam has only been peaceful when it has been subdued by conquering military might, and that is what will be required to quell the current insurgency we see today.
One of the biggest farces now confronting civilization is the demand by Muslim groups that Western countries hosting sizable Islamic populations allow them to self-rule and establish Sharia law for Muslim members of the society in total disregard of local and national laws.
This, too is a form of invasion, and it is entirely preposterous! While subscribing to their cultural and religious norms may be reasonable if they do not conflict with local law, the idea that a people or culture can decide what laws they will and won’t follow is beyond belief, and yet, there are Western nations and people willing to pander to this type of nonsense and to accommodate the farce.
Sharia law in Germany, page 2:

If Germany didn’t learn from their mistakes, they’re doomed
Is that sarcasm? I’m really hoping so.
Why should we care, should not be coming out of any American’s mouth. If we can’t stand and be the Resistance, there will be no Trump. We the American people have to make a change, don’t sit back and wait on someone to do it for you.
That’s what democrat liberals do. Not red blooded American’s.
These people are not police ….. They should be rounded up and shot
That’s B******t !!! NOT HERE !!!
The Getmans have handed over their country to something just as evil as they did in WWII. They have learned nothing. Have we?
No civilized country should have sharia law we need to elect leaders with the guts to step up and stop this from happening. But everyone trying to be politically correct and it putting everyone in the free world in extreme danger.
Germany seems to have a hard time learning from her past. Funny. I always thought the German people were an intelligent people. Guess not. But neither are the British people.
If Sharia Police can Patrol streets in Germany it can happen here & that is the goal of Obama with his forced importation of millions of Islamic refugees from the middle east.
As Sweden warned, what is happening in Germany is the result of becoming “TOO TOLERANT” & ignoring the honest goals of radical Islam.
so we can fight them again only this time it will be Muslims and not Nazis.