One point that was not brought out in the news article was the fact that this event also ruined someones wedding reception, which was being held on the pavillion at the time. Now if you were a guest at a wedding, and you saw someone put what looke like a pipe bomb nearby, don't you think concern would be warranted? The pink bunny analogy is cute, but pink bunnys don't look like pipe bombs. Besides, if there had been a stuffed animal where this cache had been located, it could have generated concern too.
The simple point is this: If you are going to hide a cache, don't use PVC or metal pipe with end caps, and whatever you do use, label it clearly and obviously. Also, if you visit a cache and it isn't labeled like it should be, then label it before you leave. You may just save someone a lot of grief later on. Considering how much emergency services resources got used on this, a little labeling effort would have gone a long way.
