It seems to me that many posters are wilfully misreading the article which was linked to.

The article states that the new law does not prohibit classes in any particular ethnic culture or language or literature.

A. It prohibits classes being restricted to one race or ethnic group.

B. It prohibits classes being used to promote hatred toward any particular race or ethnic group.

Neither of those stipulations blocks study, say, of Hispanic literature, or Mexican history, and so forth.   

Dave Oesterreich