I invite everyone not to follow bias from the media, not even the title from this video:
1. Excellent control from the Swedish Polish. 2. Not direct clashes or attack between both groups in the demo, at least from this video. 3. Rather than Muslims (no idea why people feels excited with this word) the video shows a group of citizens including Swedish citizens with Palestinian flags some of them, and another group of Israel supporters showing as well their flags and apparently more quiet. 4. One of the groups is attacking and the chant says Hitler, Hitler??!! Come on. One guy! ONE looser that evidently do not find followers cries a couple of time Hitler Hitler.

So in conclusion> People needs to protest and that is healthy, when two groups of different political, religious, etc, etc flanks get together of course the animosity can rise to the skies and when the limits are crossed, is good to have polices around to take some individuals out of the scene and relax in some police box before they do crazy things.
Finally, for the people that believe on segregation I just want to comment antisegregation, togetherness, understanding and education is the best way to avoid stereotypes and respect human rights. Going back to basics with Walter Lipmann...