It was a misused 'racism' callout comment (intentional or not, unknown) that was used in an incorrect manner; probably parodying how abused and misused the word is in present society. Or, could have been a troll just to garner emotional ill-informed & lazy responses just like yours.
Please do not be part of the mob in the future and actually do some (5 seconds worth of?) research and then think upon the it before commenting...
FYI. The 'facepalmed' like of your comment is due to the cringe level of it, not because they condone or support racism... so save your grudge false reports versus that individual.