Nobody gets hurt if you shoot into the dirt. (Just don’t shoot your foot.)
“Celebratory gunfire can be practiced safely. People could use blanks or fire bird shot into the air”..
Lets not be too hasty......I recall a time when I was much younger, my dad had some 12 ga. “blanks” which he used to demonstrate that a blank can and WILL cause serious injury or damage when fired towards an object or person. He fired his 12 ga. at a limb of a tree some 15-20 feet away. That particular limb was about 2-3 inches in diameter and when the smoke settled, that same limb fell to the ground, completely blown off the tree. Tell me that “Blanks” are safe. As I stated, that WAS a “blank” cartridge.
You might want to try and avoid gas lines also. LOL!