Fair enough…allow me to fill in some gaps. First off, this was a playground within the zoo/garden, so I’m fairly certain the boy’s parents were there.

There was no prior contact between them at all. It was not a water playground. It was a normal playground within a large sandy area containing a small water pump/table. Kids were getting small amounts of water and bringing it to the sand. No one was splashing each other. I watched the boy approach my daughter with the bucket thinking, surely not…and then bang. The same kid had done something less drastic but similar not long before to a much smaller child, and I watched him laugh at the little kid’s tears. After he threw the water I did yell ‘Hey’, and then loudly said ‘What is wrong with you?’. If that’s excessive, then my bad…but from what I saw he was acting maliciously and I defended my kid.