Christianity is not antisemitic, but some portions of the Gospel story are. Perhaps some day Christians will decide that those parts are not essential to its central message, and will reject them, and stop singing about them.

Gerry, you haven't demonstrated - to anyone's satisfaction but your own - that anyone is singing antisemitic material. This is Lord of the Dance, not Send the Buggers Back. I've known this song for 40 years (I learned it in primary school) and it's never so much as crossed my mind that it's saying 'the holy people' crucified Jesus, let alone that 'the holy people' is special sekrit code for 'Jews'.