Should a would-be author be concern about Political Correctness?

Should a would-be author be concern about Political Correctness?

Why should a would-be author even bother to concern themselves with Political Correctness?

Let’s use ivory as an example. Would it be okay for an author to write about the brutal killing of Elephants and the Black Market in ivory? Would there even be an audience for such a book?

Similarly, would it be politically incorrect for an author to create a magical object partly made of ivory in a fantasy or magic-realism novel.

Authors have the same problems if they choose to write about race, ethnicity, class, religion, or crimes committed by a particular group - and of course politics.

What should a book contain to be Politically Correct? Must it have Black, White and Asian characters?

Must they all have to be from the same social class and background? Must it have left-wing and right-wing characters? Should there be an equal mix of Heterosexual, Lesbian and Gay characters?