On a packed train with my family. Couple across the aisle both alternatively playing social media videos on speakers at full volume. Managed not to say anything until the woman started playing a documentary about serial killers. I'm here with my daughter. I politely said "please could you turn it down it's not appropriate." To which she replied "I'm sure she's heard worse at school." I said that really wasn't her call to make and in general could she please reduce the volume. Her response "Its a public train for heavens sake". For me that's exactly why it is anti social (and what headphones were invented for). I'm wondering which one of us is out of kilter on this? Ps I should note she did thankfully reduce the volume and we all left it there.