Here's some contextual guidance: when racist cunts do it, its intent is racist. When other people do things for other reasons, such as to express solidarity with the victims of genocide perpetrated by a different bunch of racist cunts, it's not racist.
And in Scotland and Wales, the nationalism is inclusive, so it's different from the exclusive, violent shit that idiots like Are Tommeh are promoting in England.
I hope this helps, though I doubt if it will.