The glorious sound of boos coming from the Rangers end at full-time on Sunday may not have registered with many Celtic fans at the time.
As a Hoops supporter, you are likely to have been hugging a stranger or singing a joyous song when Don Robertson’s final whistle sounded.
But, as the likes of Callum McGregor and match-winner Jota celebrated, it was hard not to hear what was going on at the other end of Hampden.

The Rangers players were busy saying their apologies to their fans once again, thanking them for their attendance at another loss to Celtic.
The likes of John Lundstram and James Tavernier were first over to clap the disgruntled support, who responded with a sea of boos and expletives.
It can be viewed on Ibrox vlogger OhItsSteely’s video from the match, although we should warn you that there is plenty of bad language that can be heard.
Make no mistake about it, the boos were the breaking point for fans of our rivals amid a beautiful period of Celtic dominance.
The Ibrox side have won two trophies since their promotion to the Premiership in 2016. At the end of this campaign, there’s a fair chance that we’ll have won 17.
They are second in Glasgow, and have been for all of the previous seven seasons, bar one.

The boos were their way of voicing their frustration at being second best to Celtic once again.
What a time to be alive.
In other news, Ronny Deila has been talking about the Celtic support
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