Common meaning:

When one culture values its ideas over that of another culture. 

Hidden meaning of the Equity religion: 

Only white people can be racist and we need to deal with this systemic problem by dismantling the problematic culture.

Discussion:

When the Equityists talk about cultural racism, they mean the racism of white people, because white people are the only ones who can be racist according to Equity theology. 

The Equity religion wants to dismantle what it views as the problematic white cultural system. One of the ways it does this is to use a deceptive trick of saying the system is bad, over and over again. There comes a point where people actually start to believe that it is bad, despite the fact that no evidence has been provided.

European culture, like many cultures, has its issues, but it has also given us many good things. However, you can’t convince someone who is an Equity believer of that fact, because they have bought the lie that European culture, or white culture, is completely evil.

If we consider judging individuals based on the racial groups they are members of to be racist, then we can say quite assuredly that the Equity belief in cultural racism is, in itself, racist.