While this does indeed sound like a problem for Sweden and something they will have to fix, it's worth pointing out that by my calculation the US fatal assault by fire arm rate is 12X the rate that is causing a crisis in Sweden.
What does the US have to do with the article? Why is it a relevant country for comparison?
People quote articles like this in the US to pretend that the EU is suffering from some dystopian crime wave but (from the perspective of the US) the opposite is true.