Sure, Those are problems, but our current way of dealing with them is "Instead of trying to find those acceptabilities and safeguarding the intent, we're just going to avoid the issue to the detriment of anyone who is not an able-bodied, attractive, straight, cis, white man."

Some of them are pretty easy to figure out, in my opinion:

1.) saying that a group of people are objectively bad because of the colour of their skin is not acceptable. Further, saying that some people are not people because of the colour of their skin is not acceptable.

2.) saying that someone is lesser because of their gender is not acceptable.

3.) saying that someone is objectively bad, or lesser because of their sexuality is not acceptable.

4.) saying someone is lesser because of their disability isn't acceptable.

I manage to get through my life basically every day without breaching one of those rules. I don't even have to try, it's quite simple.

I'm from a country where the concept of free speech is fundamentally different than it is in the US, so the concept of "things you can't say" isn't some Orwellian, 1984-style bogeyman. It's just not being a piece of shit, and being held to account when you are.