如何剖析和理解 which should happen

Idon't want children taken away from parents and when you prosecute the parentsfor coming in illegally which should happen you

haveto take the children away.

Itwas torture what they did to us.

如何剖析和理解which should happen ？

I don't wantchildren taken away from parents and when you prosecute the parents forcoming in illegally, which should happen, you have to take the children away. 

which shouldhappen为非限制性定语从句，which指代when从句内容。这种定语从句需要用逗号分隔。