A thought is no longer private once we've spoken out loud about it to anyone who can hear and understand it. I know this sounds faceteous, but if we talk in the English language to an Ethiopian, for example who doesn't speak it, the only thing we've conveyed is our body language. But to make it clear: it cannot be called a private thought once it is out there.
Once it is out there people interpret the message put out through the filter of their own bias and predujices. We all do it. It's called conditioning. Added to this, in this present 'over the top' age of political correctness, if we say virtually anything at all which can be interpreted by the over-sensitive as some sort of slur, the chances are - in the USA anyway, it seems, someone will want to take us to court and sue us for a lot of money.
A way around this is to write a work of fiction, or an essay, or a short story where no particular reference is made to you, the author, as the one who might be accused of being seemingly biased. Play it safe. Let one of your characters do that.
Good topic, mate. Keep on stirring people up with this one. I'm pretty sure you'll get plenty of responses.