I checked and this is not a hoax, the Hampshire (UK) Police indeed arrested a guy because he posted a meme of a trans 'flag' shaped like a swastika. And then arrested another guy for filming the first arrest.

If your reaction is "but that speech is noxious!" then you failed. https://t.co/FE6yOkg4fe

— Jeff B. is *BOX OFFICE POISON* (@EsotericCD) July 31, 2022