I think Liverpool fans are entitled to protest about a song where the words and the meaning behind them are unambiguous, namely to reinforce the supremacy of a hereditary position (and system) which represents the beating heart of the establishment (that they feel aggrieved by). I think it would be very difficult to argue (in broad terms) against that being what the words to our national anthem represent, for better or worse. On that basis their protest is based upon a sound factual footing.
What they aren’t entitled to do, is take the far more ambiguous words to another song and ascribe their own interpretation upon it and treat that interpretation as a matter of absolute fact (which is echoed in the media) and then be offended by it. Which is precisely what they do with the ‘always the victims’ ditty. That is wholly different, because it is telling others what the ambiguous words to a song mean, in order to be offended by it.
There are blues on this thread that are failing to appreciate that the latter has given rise to other poster’s feelings on the former, especially given the associated hypocrisy and the inconsistent press coverage of each matter.