I have to cringe at the title and the word "sniper" in the description. Is this a translation thing from Swedish to English, or is it plain sensationalism?
As has been noted by a couple of people above, they are taking marksmanship training with 22 rimfire rifles on what looks to be a biathlon course. The rifles themselves rate pretty low on the power scale as guns go, but all the skills they are learning are directly transferable to any other rifle. Sight picture, breath control, trigger control, stance, it all applies.
It just goes to show how deep the delusion goes, they can't deny them this training or else they would have to admit that they are concerned about safety, and if they're concerned about safety then why are the refugee's there in the first place?