This is just sensational reporting. From the comments, it looks like it is working. Usesome of the critical thinking we ask trump supporters to use. Medical science isn't at the point that it can know which source of stress caused a thing. And in this case the baby had also lost it's mother, a source of comfort. And read the whole article. "We know that fireworks can cause stress to other animals in the zoo and we cannot rule out that they may have contributed to the untimely death of Roxie's mother Ginger, just five days' earlier."
They don't even know what killed the mother.
I am sure the fireworks were a contributing factor, but sounds like the baby was already in a weakened state.
We collectively need to get over this concept that media is accurately representing the truth with intent to inform. Media is a business. It's intent is to make money. And with lot's of competitors, it can only survive by making the stories it reports more sensational than they are (cause their competitors are doing it) to get the clicks. Some are better than others, but they all have to do it to survive.
This implies all men are capable of considering the long term impact of their decisions... holding them accountable should be done. But it won't have much of a prevention effect because the perpetrators aren't forward thinking types.