You realise that winning on appeal means the original conviction didn't happen right?
> The video was obviously a joke
First of all you claimed he was imprisoned for this, and he wasn't. This is yet another case that you don't understand that you think supports your point when it really doesn't.
He had a trial. He could have used a free speech defence. He chose not to. Importantly he was invited by the judge to make a freedom of speech (article 10) defence, and he chose not to.
> [11] Prior to being addressed by the petitioner at the conclusion of the trial, the sheriff had noticed that a written argument had been lodged by the petitioner,but not yet touched upon. In it, there was an oblique reference to Article 10 of the European Convention on Human Rights (Freedom of Expression). This had asserted that the petitioner’s actions were “entirely compliant” with that article and that the exceptions in Article 10(2) were not applicable. There had been no other analysis. There was no reference to any compatibility issue. At the stage of submissions, the sheriff had specifically asked parties whether they intended to address him on freedom of expression at common law or in terms of the European Convention.
> [12] Despite the sheriff’s express invitation, which included mention of M’bala M’balav France, unreported,10November 2015, App No. 25239/13,there was no reference in the defence address to Article10. All that had been said by the petitioner about freedom of expression was that the court should be jealous to guard it. There was no compatibility minute, which, if such an issue were to be raised, ought to have been lodged in advance of the trial (Act of Adjournal (Criminal Procedure Rules) 1996, rules40.3 and 40.6).
He chose to use the "it was just a joke bro" defence, and failed because he couldn't show that she had even seen the video, and if he was pranking her there was no need to broadcast "gas the Jews" to his YouTube followers. He then tried this defence again for his appeal, and that failed too.
> he had 8 subscribers on his account.
He uploaded it to Youtube with the intent that it would be seen by other people, thus completing the crime. He could have made it a private video, he could have not uploaded it to YouTube. He communicated the video to other people and he had the intent that it would be seen by other people.
> “20... the primary purpose of the [petitioner] making the video was not to annoy [his girlfriend]: it was to make a highly offensive video for sharing on his You Tube channel for consumption by him and his subscribers; the [petitioner] willing (sic)for the video to be shared and viewed by anyone in the world”.
This is what was found at his original trial. He has not appealed against this finding.
> The way you tell the situation doesn't give full picture
You claimed he'd been imprisoned for it and he hasn't. But he uploaded a video containing Nazi imagery while he said, more than 20 times, "Gas The Jews". He knew this would cause offence. Causing offence was his intention. What have I missed out?
For you to claim that these 2 cases equate to widespread human rights abuse in China is laughable.
> The point is that you shouldn't have any legal proceeding against you because of a song
You still haven't named the cases. You're getting the genre wrong btw, it's drill not grime, and they were imprisoned for breaking an injunction that was aimed at tackling gang violence: they made credible death threats to other members of gangs.