Also, any attempt to report this has been silenced or censored and the ones responsible generally get fired. An old swedish cop explained how a regular day to day workday was, but he didn't care as he was about to get retired. He got a lot of negative comments from revealing that. There's numerous other examples that has shown this habit. At one point, they had contacted an english site and asked them to block access to certain articles for people from Sweden. I tried myself and managed to access it using a proxy. It was indeed true.
We have grenade attacks of immigrants occasionally. The attacks has been steadily increasing, based primarily on the amount of people we've taken in. Granted, I live in a safe neighborhood, way outside these areas, so I'm not exposed to it directly.
The reason that it has not been phrased as an official terrorist attack is because it's technically not terrorists, it's immigrants. It hasn't been an increase in gun violence. But an increase in beatings, knife atacks and grenade attacks. It's far easier to create grenades and buy knives than guns. As for beatings, you just need a larger crowd than the one you are attacking.