Will companies be fined if commercials don't portray blacks positively?

I mean is there a law or something, because 100% of commercials have a black person always portrayed in a positive light. I mean 75% of the country is white but there are more blacks in commercials than whites and you rarely see any other minority in a commercial even thought hispanic population is as large as the black population. Also all criminals or dumb asses in any media including movies are cast as white men. Just wondering if it's a federal law?
Will companies be fined if commercials don't portray blacks positively?
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