Too bad this wasn't in the US so that it could be tested under the 4th amendment, which actually have some teeth. Unfortunately this happened in the UK, so I guess he is SOL.
Unfortunately, currently the only amendment which seems to have any teeth is the second. After all, you shouldn't bring teeth to a gunfight.
I have no idea what this is supposed to have to do with the thread.
The first is rather well protected. They tried to ban animal snuff videos for example and it was overturned. Hate speech is protected as well, whereas it is prohibited in most (all?) European countries.