You won’t find anything about political correctness in the classics. In fact, you won’t find it in modern philosophy either until the 20th century. This idea that morality has something to do with a laundry list of -isms and -phobias is just garbage that was spoon fed to the Boomers through the modern mass media and the universities. It is being shrugged off in the age of the internet.
Note: I’ve read what Luther and others had to say about anti-Semitism. Nothing.