the guy publically posted a racist comment in the UK where there is not an unlimited right of free speech and anti-social behavior is regulated. I don't see the privacy concern. I prefer an unlimited right of free speech, but I don't call it privacy. This guy did have something to hide, shoulda kept it hidden.
Because once you start threatening politicians in the US see how far it gets you. Post a picture of yourself with an AR15 and a comment of “looking for Biden” and see how well that first amendment works.
And it worked very well, because precisely nothing happened.
But either way he wasn't charged with being a racist. And outside of being a member of an extremist group I don't believe it's actually illegal to be a racist in the UK. It's illegal to be offensive. And that's what he was ultimately prosecuted for.