They can attend those processions without problems but they have to remain neutral. The issue here is that they want to take part in communion, which as a relig

They can attend those processions without problems but they have to remain neutral. The issue here is that they want to take part in communion, which as a religious act is obviously not allowed. I'm sure this sort of things used to happen without issues in the past. So did for instance traditional nativity scenes in town halls in the South. But recently things have taken a stricter (extreme?) turn partly not to be seen to have an issue with a religion in particular, although of course the reality is that it is undeed a religion in particular (or at least the way some people practice it) that is problematic.