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:

Bye bye birdie.
We need to close the door to those people trying to bring there believe in our country. go with your shariah law to hell dirt bag
Good luck Germany nice knowin’ you
This is a very small example of what’s coming to our local neighborhood…you just need to check out YouTube, and also check out the history of the Muslim brotherhood, and you find out what their goals are.
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Never thought germans where so spineless to allow such evil into theit country
Why in the world would Germany do this,just get those people out and back to there own country is this what happened when the$#%&!@*party took over,do you want that again? I sure hope not.
America Please Wake Up look around you see what is going on we have to stop this before it happens to our country. I for one do not want this and I am sure you don’t .
Because people in Germany must have given up on life and Germany. Germany is no more. The once powerful.nation and proud people. Gone
Never thought of the Germans as stupid before. They are not alone. All of Europe asked for this mess. Thry got it.
Enforcers of Sharia Law in the USA are criminals and should be arrested for harassment, assault, and every crime they are committing and they should be treated as Hate Crimes.