Do you know what ivory is? It's a hard, white material that comes from the teeth and tusks of some animals, like elephants and walruses. Sometimes people use ivory to make pretty things like jewelry, decorations, or even musical instruments.
But there's a big problem with using ivory - it's very cruel to the animals and it's causing them to become endangered. That means there aren't very many of them left in the world, and if we keep taking their ivory, they might even become extinct (which means they would disappear from the Earth forever).
So, some people have decided to destroy ivory instead of using it. That means they are breaking it into small pieces or burning it so that nobody can use it or sell it - and that's a good thing, because it helps protect those animals from being hurt or killed.
Think about it like this: If we break all the ivory into tiny pieces, then it will be like a puzzle that can never be put back together again. And if nobody can put it back together, then nobody can use it to make pretty things or sell it for money. So, by destroying it, we're keeping the animals safe and making sure nobody can harm them just for their ivory.