This is terrible. I want to crack jokes and mock sweden but at this point it's just sad.
Open immigration means you're importing good immigrants and bad ones, for every 10 migrants trying to earnestly start a new life you get one of these psychos who will probably kill again and ruin the reputation of other immigrants.
Don't let your liberalism and compassion overpower your logic and temperance, you need to discriminate and have a discretionary immigration policy.