It's the long-running internal feud that feels is reaching the point of no return Fed-up Celtic hit back in a hurry at the Green Brigade on Tuesday night as the club's patience with a highly influential section of their support nears its end.
The ultras are already serving a ban for away games amid claims members broke into Celtic Park. And now they won't be allowed early access to stadium on a night they are urging fellow supporters to fly the flag of Palestine amid the harrowing violence raging in the Middle East.
UEFA – who already have a direct hotline straight to Glasgow's east end to dish out fines – will take a dim view over a political protest under their umbrella.
Both represent the same colours, of course, but the Green Brigade and the Celtic board stand on opposite sides over multiple burning issues woven into the soul of the club.