Sweden always had lax punishment for violent crimes. It worked when 99% of the population was European (that was the case until the 1980s). Things changed when radical feminists and left wing nuts seized power in the 1980s. They "invited" all the Somalis and Afghans they could find to come and live in Sweden, so that the country would become "diverse". When the Muslims found out that raping the infidel women will not put them in jail they went berserk. According to the latest stats, 77% of all the rapes in Sweden are committed by Muslims.

Inviting different genetics was probably essential to prevent various diseases related to incest. That's what happens when blond/e Aryans only have sex with other blond/e Aryans for several generations. They might be retarded, but they did something right. Their problem seems to be a broader inability to understand things like "unintended side-effects" of their control-freak desire to make their society run like a machine.