If it is those songs then whoever is singing it deserves their day out to court!
Some of the negative press I've read recently though is for the Moratta song which only has the yid reference.
An interesting article, but I don't agree with what he's saying.
Language is all about context, in this context the word has evolved over time and I'm pretty sure that most Chelsea fans aren't singing about hating Jews when they sing their songs, they're singing about hating Tottenham. Yid...