Was a time when there was two rival gangs of Tamils at war with each other in E. London . One bloke very local to me (next road) was dragged out his house in the middle of the night , had his hand chopped off with a sword and then shot . Couple of weeks later another was found still alive but with his head bashed in sitting in a local river , died a few days later . Was a few court cases and all went quiet .Well, it's all a bit six of one isn't it?
It's just a very abnormal case, not really comparible to "ordinary" knife enabled violence.
Still, when I was a helmet the Tamil community had a signficant problem on a ground I worked. Up to the level that certain of their lads cars in convoy always had one designated to carry the knives and swords.