When you walk around Malmö all appears to be very idyllic. But under the surface, there’s a less romantic truth. The Swedish city and Copenhagen on the other side of the Öresund strait, that separates Denmark and Sweden, have been hit hard by gang violence over the summer. Danish police report that three people have been killed and at least 25 attacks or attempted attacks have taken place. A particularly concerning issue, according to Malmö police officer Glenn Sjögren, is the age of those committing these crimes. “They are renting killers here in Sweden to do the killings in Denmark. And they…