I was at an amusement park when I was about 20.. and this guy was trying to force his 5 yr old son to go on a pretty sketchy roller-coaster ride, but the kid didn't want to. The dad was saying to him things like "be a man! Your embarassing me! Your gonna cry like a little girl?" Just on and on, laying into the kid, totally brow-beating him. There were lots of people around, and you could tell that everyone was shocked but just kept walking by.. I could not walk away. My friends tried to get me to ignore it, but I couldn't! Then the dad kicks this kid in the arse with his cowboy boot! I saw RED! It was like time had stopped. I couldn't hear anything else, see anything else, just this kid (now bawling) and his dad. I ran over there and verbally flipped my shit. The guy told me to mind my own business and fuck off, I grabbed his big dopey cow-boy hat and started whacking him right in the face with it, asking him how it felt. Needless to say, security got involved and I was lucky to go on my way without any charges.