The Israeli constitutions discriminates against non-Jews, and says that Israel is for Jews only.

Israeli constitution disagrees with you: https://en.wikipedia.org/wiki/Basic_Law:_Israel_as_the_Nation-State_of_the_Jewish_People

They are waving Israeli flags.

Germany is participating in genocide again. For the 2nd time in 100 years.

In 50 years there will be another monument in Berlin, apologizing for the victims of the Palestinian genocide.

They are committing mass murder, so I understand the anger.