Do you judge parents for their kids actions?


I was reading the book "Nineteen Minutes" which is about a boy who shoots up a school and kills a lot of fellow classmates. It tells the story from all different perspectives, including his mothers. She was getting a lot of backlash and hate for this. I know this is a fictional example, but real things like this do happen. So, do you judge a parent for the horrible things their child does? Do you judge the way they raised him/her? Why or why not?