First of all I totally and completely agree with you that Muslims should behave themselves especially in foreign countries like Germany that has provided them with a good life and has nothing to do with this Jerusalem crisis at all.
Now as for unmasking our true behavior, please consider a few facts sir.
Jews from across the world started migrating to Palestine, had something to do with your country of course, but never the less they came to a country that was already inhabited by a local population. Why did they chose Palestine for migration, well it was the promised land of course. Promised by who? God, 2500 bloody years ago.
So they created a country based on God's will and millions of local inhabitants had to become refugees in neighboring countries, which btw they are not willing to take back as then they will not remain a Jewish majority state. But there are still quite a lot of local inhabitants living there, but now the Jews, let's call them Israelis want more land, so each year they build more settlements and take more land from the local inhabitants. Again the only justification that they give is that its God's will.
They say Jerusalem is their capital, not part of Jerusalem, not the western Jerusalem, all of it. Not taking into consideration that majority of the city's inhabitants are still Palestinians, who want to make eastern Jerusalem as their own capital. Again the only justification is, well it was ordained by God to be the capital for the people of Israel. Deus Vult.
On the other hand, their ally US of A has just declared Jerusalem as Israel's capital. If you or other Europeans are wondering that what will possess Americans to be so careless about such a move, know this.
25% of the US population consists of Evangelicals, 81 percent of them voted from Trump. He is only fulfilling his promise to them. They believe in a prophecy, and boy do they believe in it. So the prophecy is that once the Israelite return to Palestine, make Jerusalem as their capital, destroy Al-Aqsa mosque and build their temple. The Armageddon will happen, most of us will die in that war, Jesus will return, the sky will rupture and as they are the true believers they will be risen to heaven while the rest of us suffer God's punishment on earth. Don't believe me, google Evangelical population in US on google, their beliefs about Israel and their voting preferences, you'll know.
In 21st century, two western countries, one the beacon of liberty and freedom and leader of the free world, are making decisions about millions of lives based on 2000 year old beliefs.
So our behavior is in response to their religious fundamentalism and extremism. It is not right, I agree. But we are weak, we are hopeless and we are without a leadership. Weakness and hopelessness creates anger and rage, which you see on the streets. We don't know how to protect our rights, protect Quds which is as dear to our heart as it is to Jewish if not more. Most of the Arab and Muslim leadership will sell each and everyone of us into slavery if it helps them consolidate their hold on power.
So while judging Muslim behavior know this, the world is a mess sir and we are just a part of it. USA and Israel are as religiously fundamentalist as we are, the only difference is they are strong and powerful. So they can do what they desire and all we can do is protest or well throw stones and a couple of Katyushas at Israel which will cause no damage at all and knowing very well that their F-16's will bomb the sh** out of us. But that is all we can do to what our masses think is resistance.