Who are they to dictate who is and isn't welcome at Parkhead or anywhere else for that matter? We live in a democracy.
Boris Johnson's not my cup of tea, I don't think much of him as a Prime Minister but I totally disagree that anyone who supports him is somehow automatically unwelcome at a football match.
Nearly 700,000 people in Scotland voted Conservative last Thursday. Are every single one of these people unwelcome simply based on which party they voted for?
If so that's extremely sad.