Says it pretty well

"Shithole" is a perfectly good rude, slangy word. It has a great history, and it's vivid and effective. It is not a racial term, and shame on the people who are making it racist. I wonder if these people ever think of the pain and damage they are causing by proclaiming and insisting upon a connection between dark skin and excrement. They're revealing what's in their head, and they don't mind burdening dark-skinned people with the knowledge that they are being thought about like that. "

But if they don't make it racist, what do they have left?

After watching some people insist that Brexit was racist, and so was anything else they didn't like, I've given up on trying to change minds; it's wasting my time and annoying the pig.