So much bad news! I can't handle all of it!

I yell at other peoples children all the time when they are harassing animals, luckily, people who let their children harass animals don't pay much attention to them so I haven't gotten in trouble with any parents yet..
I can't imagine what I would do if I saw a child hurting/killing an animal.. The kid has to be old enough know right from wrong if it has the strength and knowledge to kill a snake, I don't even want to know what other terrible things that child will do in its life if it is killing animals at such a young age.