As I understand it the Cameroons guy said something out of order and the 4th official told the ref. The ref then asked the 4th official who it was and the 4th official said ‘the black guy’ (negro in spanish).
At the risk of being devoured by a tidal wave of self righteousness, what’s the problem? If he’d described him as the bald guy, guy with beard, fat, ugly, tall, bow legged, etc, etc. would there be a problem? I mean he is black (or is he ashamed of the fact?).
One white player on the Ivory Coast team (never been one - discrimination?) is described as the white guy. Do all the players walk off?
There was no swearing or negative criticism, just called him black.......which he is.