German cops, worried that an Israeli flag in an apartment window might incite vile, racist scumbag demonstrators, solve the problem by breaking into the apartment and removing the flag. There are only two possible explanations for this.
I believe the German police took the proper action to prevent any possible violent retaliation from happening. If I were I cop (I'm an ex-cop myself) I would do the same thing to protect the Israel supporters from becoming possible victims amid an angry mob who's anger is oviously directed towards Israel. There is a time and place for everything. I believe the German police's primary concern is to prevent escalation, considering that there have been reports from across the globe where violence has indeed errupted during various pro-Hamas demonstrations. I say prevention is the best medicine.