bbc wales investigates. emergency, police, please. smashing. oh my god, quick. there's hundreds of people here. you need to come quick or there's going to be something bad happening. cheering. at some point i expected to see riot police walking up that hill but they never came. the riot on a swansea estate shocked us all. a mob out of control — the police under attack. two months on, and questions are being asked — why did this happen and could it have been prevented? we've reached a point where things are starting to bubble over and the overwhelming response was just anger. tonight, there are calls for action. it needs to be exposed so that