oh god, i think the reaction to malaman's post is kind of why women don't feel we can just get angry. There IS this great pressure to be a perfect parent and never lose it. Its daft. Kids can learn a lot from seeing that humans lose their tempers, and then apologise.
No its not a good idea to break your kid's toy. well duh. But its not the end of the world. And malaman actually handled it well, she talked to her dd about it, she apologised. So she lost it, and then used it as a way to teach her child that such behaviour wasn't acceptable.
When I was growing up, my dad frequently lost it, like malaman did there, but NEVER NEVER apologised. If he had it would have meant a HUGE amount, because otherwise I felt that I was to blame for really terrifying behaviour
We are human, we recognise out mistakes and work with them. And parenting is the steepest learning curve I have ever dealt with, I have made a lot of mistakes.