[Devilspawn6666]

You could try a 2 sec search...

https://www.google.com/amp/s/www.bristolpost.co.uk/news/bris...

There was also another case where the police launched an investigation, which by itself is ridiculous:

https://www.aljazeera.com/sports/2020/6/23/uk-police-investi...

[Volundr]

Your link talks about two people being arrested at a protest of 300, presumably for being involved in one of the "minor scuffles" mentioned. Not for saying "All lives matter". Or are you really suggesting that at an "All lives matter" protest these two were the only ones saying it?

[n4r9]

But are there any cases where someone was arrested for saying all lives matter?