Without seeing the details, you can't determine if it's just an error, made out of anger or despair, etc., or outright defamation (a crime!).
If you assumed we are using racism in the broader context, you might agree that your quesiton itself likely indicates a racist remark, one made by the majority power (white). That likely bothers you, it bothers most people that don't understand racism. It bothered me for 15 years bubbagone, and then one day I figured it out.
And I do not use the term racism to mean: Racism is the belief in the superiority of one race over another.
I am thinking more like this:
"Scholars, also commonly define racism not only in terms of individual prejudice, but also in terms of a power structure that protects the interests of the dominant culture and actively discriminates against ethnic minorities.[49][50] From this perspective, while members of ethnic minorities may be prejudiced against members of the dominant culture, they lack the political and economic power to actively oppress them, and they are therefore not practicing "racism".[49][53][54]
"
Racism - Wikipedia
There is a language problem at the root of this issue though. If some large % of white people think they are being told they are the first definition, they maybe rightfully are offended. even if it's explained to them, they may feel that in public discourse since they feel most people ALSO use that same definition, that it's still bad....even if they understand the broader definition. So I feel if there is to be progress on this beyond just a steady organic progress, that definition has to differentiate into two distinct concepts/words.