Ironically, although the occurrence of anti-Semitic incidents in Europe (or anywhere else) is indeed very troubling, your link suggests that the particular chant you quoted is in fact a sort of pseudo-anti-Semitism repurposed for football (soccer) partisanship, rather than genuine anti-Semitism:
In other words, a bunch of mostly (entirely?) non-Jewish soccer players call their team “The Jews” as an ethnic nickname (sort of like “Redskins” or “Indians” or “Braves” in US sports, or “Gypsies” in Australian cricket). Then that team’s rivals use anti-Semitic/Nazi symbolism and chants to express their antagonism. AFAICT, the whole phenomenon involves few or no actual Jews in any capacity.
It’s definitely offensive, and deeply weird, but anti-Semitism qua anti-Semitism it ain’t.