For example, do any of them profess any particular religion, hmm?
If there's a large concentration of them around Malmo, that is a strong likelihood.
I’d bet they perps are/were muslim. In Norway 100% of vicious rapes against ethnic Norweign woman are done by Norweign citiznes of muslim background. With malmo and the muslim infestation in Sweden would doubt if the percentages differ much from Norway.
Translated synopsis article link here (actual article in norweign is in the summary: http://vladtepesblog.com/?p=22156