I’ll start off by saying I personally take no offence in being called a Hun. I’m pretty sure when the term was first used it was primarily to reference Rangers fans however over time it seems to have evolved. When it’s also used in various forms to describe the likes of Hearts or Airdrie fans who tend to possibly have the same political or religious view points as your average Rangers fan then I think it’s quite clear it’s no longer being used to describe one clubs supporters and that’s when it starts to get a bit murky for me.
There’ll be a lot of mental gymnastics from people trying to defend it but it is used to define a particular demographic of people, as well as a catch all for Rangers fans, and in the majority of those cases it tends to be in a negative sense.