I'm able to speak German, your able to speak Arabic. I understand a part of the cha(n)ts because they're in German. And when I hear dead to Jews (in German) and I see the ISIS flags, then there is nothing to talk about. If I see synagogues being inked with paint, the people leaving are spitted on.. then there is nothing to talk. When there are reports of Jewish students being hunted and beaten on different campuses, when pupils report that. When teacher calling the police because the Arabic pupils are going wild because of the Jews and Israel - then there is nothing to talk about. Absolutely nothing.

I'm with you that killings of Israel is not ok (if it can be said like not ok - I don't know an English word that is even more not ok then not ok.)
Also what Israel is doing in Gaza all the time, the illegal settlement and the nazi-settlers that are now even sanctioned by the EU like the nazi-russians.. is not ok, too.
That is all out of question.

But the Problem is the Hamas. That's the problem. And the Hisbollah. Actually. The arabic thinking "Israel is bad and needs to be extinguished from the Earth's surface" is the ONLY problem and is very bad.

If you think outside the box about it, it's the same what's happening in Ukraine and Russia:

With Ukraine being like "Russia is bad. We want Nato. We want Europe." - that gived Putin a tool in his hand to pull the Russians people onto his side and start a war which is supported by the majority of Russians (I'm born Russian and it's utterly stupid what's happening there!!!)

The same happens in Israel. The Hamas and Arabic thinking give the Israeli hardliners a tool and the people of Israel support this..

So, if you want a change there, stop being like that. Stop cherish the killers and non humans of the Hamas. Stop chants of death to Israel. Slowly the Israeli hardliners will lose support. As one might not imagine, but in Israel there are also demonstrations against Israels doings.. so, you need the Israeli people to stop this.

And exactly this kind off "I say No to the constant arming of israel that has killed +10K children. The people protesting dont care about whether israel is jewish or not fyi" demonstrations are happening in Germany. The one's forbidden are rightly forbidden for the named reasons.

Here the Arabic ones are searched on the street. That's true. But the Arabic looking ones (beard, national clothes, woman in behind can't see anything because of the trad. clothing) are the ones who did suicide attacks and killed to much of German people. If you don't see a link in here, why they are always suspected - then you have your answers here: because they don't accept the German laws, people, living, thinking, believes. It's all a sin for them. So for our own security, we need measures like that. Of course, we also have Arabic people who are contemporary in thinking and also successful on all parts of live and work. They never will be stopped or searched. Germans aren't xenophobic. We have a few xenophobic ones, but this are stupid people and not to be considered Germans (assholes).
And with the assholes too, their fears and their thinking is much supported by the carried out and planed suicide attacks and (just yesterday's) criminal statistics showing that each 3rd criminal case like rape has been done by a foreigner/help-seeking african or muslim (syrians and iraqis the most).

So all the hate and violence spreaded mirrors back. The same in Israel.

It's true that WW2 thing and Germans "no, we are not in the position to criticize" is a bad behavior. Which doesn't mean support. It's just a "no we are looking away" in my eyes. Not a sign of "..go on..".

USA started to be louder on this.. a lot of other countries started to be loud on this. They started to help, because what Israel is doing there is a humanitarian crisis. You can't call it genocide. Genocide would it be when they would concentrate on Palestinians, but they try to mitigate the hardliners of Hamas, which as we've seen are a big insecurity for Israel. Stop Hamas, you'll stop Israel. It's easy like this.

There's no guilty filled thinking from my side. I'm a neutral person. Thinking. Understanding why is something happening. That's my way of conflict resolving.
If one is do no good, then he will get it back twice so he learns that and do not forget.. (it's the Russian in me haha)

So, there is no big reason to why demonstrate here or elsewhere, when the problem is utterly in different places. What's started there, needs to be ended there. For both sides.

I think it's not ironic that Germany is a big reason you're in this mess. It's all done by yourself. Germany never said "go on Israel. Let's illegally settle on Palestine" - infact they too criticize Israel for that. There is a lot of no-good in Israel. Where criticism is needed, criticism is brought up.

If you wanted to say because Germany couldn't solve the Jewish problem in WW2 so now we're having this big mess - i don't even dare to think you could've meant it that way. Then you're part of the problem and problems need to be resolved before it can get better. Change your view on the world and you change the world. Peace.