I go to live events to experience the moment. I sometimes take a few photographs, but I'm always mindful of those around me and of not getting in their way. It's an increasing source of personal annoyance that some people seem to think that recording the occasion somehow prioritises them over those who are just watching. You often get it at county cricket, with semi-professional photographers wandering around in the middle of an over with enormous cameras on tripods, sometimes deciding that the perfect spot to stop and take some shots is right in front of where people are sitting.
Several years ago I was at a pub on a hot summer's day where a live band was playing on a Sunday afternoon in the beer garden. A friend of mine, who is a very large man and former Royal Marines officer, very politely asked a bloke who stood right in front of him with iphone raised aloft to please move or put his arm down as he was blocking the view. This man looked at him with utter disdain and replied contemptuously "I'm filming the band", before turning away again and carrying on. My friend, without saying another word, grabbed his wrist from behind, wrenched the phone form his hand, and flung it into the bushes around ten yards away. The offender stood speechless for what seemed like ages, his mouth opening and closing like a goldfish, before scuttling off to retrieve his phone.