It’s part of the standard pattern muslims follow as they work to convert countries to Islam. And they have been taking over non-muslim countries with that technique for 1,400 years. They lay low until their numbers are large enough to give them confidence they can reveal their true character and intent. They fit in and act peacefully when they have to. They use force and savagery when they feel they can prevail. Where the government and/or populace are weak lambs they don’t need to have a large number before they show their true character. Like in Germany and most of Europe. Where the political climate is not so welcoming they wait longer until their numbers are larger. Like they are doing in the USA. But in the end the result is the same - Islamic domination.
So, for the sake of brevity, Islam is a War Plan!