Fireworks are a celebration of peace. They’re made from the same ingredients as bullets but they make something beautiful instead of death. I’ve always found this a profoundly meaningful thing.
Unless you count birds that abandon their nests, and other animals that flee their homes. Or the heavy metals and other chemicals that are added to the environment. Or the significant increases in particulate matter in the air.
We can come up with that laundry list of environmental impacts for a lot of things. Should we start with the electronic device you used to type your comment?
If you’re thinking to argue that your phone is essential while fireworks are mere entertainment, all I can say to you is “bread and roses.”