Do you judge other parents silently? What do you judge them about in particular?

I don't know even when I consider myself to be a different (I know almost each one of us do) from the traditional parents, I still end up judging other parents. I judge how they deal with a particular situation that arises. For example, if their kid throws a glass on the floor and they scold him, I would feel that the way they handled the situation wasn't right. The other day I had gone to my parents' home and my neice was playing with building blocks on the bed and she was throwing them all around the room. Seeing this, my sister-in-law came and screamed at her and packed all the blocks and told her that since you are behaving so badly you are not going to get them today. I was watching all this. I didn't say anything but I felt that the whole thing could have been dealt in some other way too. I guess I become too judgemental when I parenting for me too is a first experience. Well! I know where I am at fault, I analyse it too but can't stop myself from judging. Phew!