There are many stories how local Social Services kidnap children of immigrants without any chance for repeal. No evidence, just single accusation. I think I will pass.
I think this deserves a reply. First of all, the child welfare system is not allowed to disclose why they take the children, so naturally you get a very one sided view of all stories.
Scandinavian countries are culturally /very/ different from the rest of the world. Child safety is not taken lightly, and physical abuse or risk of sexual mutilation are typical things that they react on. Schools are obliged to contact the child welfare system if there is any suspicion or any wrong doing.
I know the there are some pretty high profile cases with eastern european and middle eastern children involved right now, which I'm sure you are referring to. TL; DR: Don't hit your children. They will be taken away.
The problem is not the first reaction of taking children away, I totally agree with that.
Problem is to get children back after initial claims are not confirmed. They ignore other family members (grandparents, spouse) and just keep piling up excuses, i.e. you have to speak Swedish language.