Don't get me wrong, I have been surprised by witnessing a thrown punch even in a very nerdy upper-middle-to-just-posh Cambridge pub (seen exactly once over the course of about 9 years), but even that wasn't at the level alleged (IDK if found guilty) in the referenced case.
There are people murdered in pubs. People are raped at festivals. those are awful, similar with striking someone with a sledgehammer. Should we shut down all pubs, or all festivals? No. All protests? Also no. Even all protests about one particular group? No.
Don't get me wrong, I have been surprised by witnessing a thrown punch even in a very nerdy upper-middle-to-just-posh Cambridge pub (seen exactly once over the course of about 9 years), but even that wasn't at the level alleged (IDK if found guilty) in the referenced case.