I have the entire series on dvd, including one episode they claim has only been shown on TV once. I simply love that series. But if you really watch the message in most of the series you can see where they were laying the groundwork for the political correctness we have now.
Rod Serling said the biggest stress he got from producing the Twilight zone was having to deal with the networks and censorship. If there was any political correctness, you can bet it wasn’t coming from him