Righteous Anger is unjustified??

I was in bus today when I realized something....While i am traveling in a bus, train or car I rarely look inside, most of the time I am looking outside.

what i saw outside today, there was this man going on his bike, behind him was his wife and in between both was their small child, As he was driving I saw the child playing with his mother, used to hide his face in her 'dupatta'(scarf) or sometime buried his face in her lap, the mother too was playing with her, it was good to see. In the process the bike got little unbalanced.

The man somehow controlled and then blasted his child and his wife, After that both of their faces got so down that one who watched them playing would feel sorry for them. The wife knew she was wrong but what hurts her was the way he blasted, the child looked feared and confused, While for the man he wanted to deliver his message in such a way that they never repeat that mistake, his concern was safety considering the way he managed to get the balance back.

I thought how none of them were wrong, still all three of them were feeling bad. It happens with all of us we understand that what other is saying is right still we get hurt Or we dont consider about our ways when we know we are right and our intentions are good.