In Germany it's not prohibited. See this interview (translate it using Google).
https://www.welt.de/politik/deutschland/article247935012/Palaestina-Demos-Deutsche-Staatsraeson-schafft-keine-Sonderregeln-im-Bereich-der-Versammlungsfreiheit.html
It's just forbidden to bring weapons and commit violence. Otherwise you can f there and protest
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Sounds completely reasonable
I agree. But they say in other article that who protest is ok, but if they begin with anti semitism they will be kicked out of the country