Celtic Football Club asked these self-styled 'ultras' to stay away from Parkhead yesterday, as did the Scottish Government and Police Scotland.
Yet the bams turned up anyway (they always know best) even though the citizens of Glasgow have been urged to restrict all non-essential activities to help stop the spread of Covid-19.
As it turned out this 'clownfest' failed to inspire the Celtic team who went down to one of their most dismal defeats ever - no spark, no fight, no game plan and not a single shot on goal.
Celtic fans gather at Parkhead despite Nicola Sturgeon's warnings to stay away
The Green Brigade delivered their message as the Hoops team bus arrived at Celtic Park.
By Jonathan McFarlane & Sean Murphy Daily Record
Celtic ultra group the Green Brigade continued to make the importance of today's clash with Rangers clear to the players as the Hoops team bus arrived in Paradise - despite pleas for fans not to congregate at the game.
Neil Lennon, Steven Gerrard and even First Minister Nicola Sturgeon had called for fans to stay away from the stadium today and take in the match in the safety of their homes.
But their message was not heeded as a group of fans greeted the arrival of their heroes with smoke bombs and firecrackers that emitted green smoke and a banner that stated simply: "Today, nothing else matters".
Football, Idiots and Covid-19 (17/10/20)
I'll be watching the Celtic vs Rangers match in a couple of hours which will be an interesting experience with no fans inside the stadium.
Speaking personally, the game will be a welcome diversion from the monotony of life under Glasgow's latest version of 'lockdown lite'.
Yet from a public health standpoint I have to say I agree with Labour's Ian Murray who called for the match to be postponed because of the recent big spike in Covid-19 cases, in and around Glasgow.
If you ask me, there's no doubt that lots of Old Firm fans will gather in other private households to watch the game, despite being urged to stay in their own homes.
The fact that a relatively small number of idiots will behave in this way is neither here nor there because that's the nub of the problem - it only takes small numbers of people to behave irresponsibly for the virus to keep spreading.
But read the reports below via the links to the Daily Record and BBC Scotland, and decide for yourself.
Ian Murray, the Labour Shadow Secretary of State for Scotland, has called for Saturday's Old Firm derby to be postponed amid fears that fans will break covid lockdown to see the match.
Saturday’s Celtic vs Rangers game should be postponed as matter of public safety during the coronavirus lockdown, Labour’s Ian Murray MP has said.
The Shadow Secretary of State for Scotland called on Nicola Sturgeon to ban the game amid fears that fans will travel from Glasgow to Blackpool pubs or congregate in private homes in breach of guidelines designed to stop the spread of the virus.