Should I go yell at someone else's kid for playing in my yard?
What do you hope to accomplish by yelling at this kid?
The parents would have been very pleased if I had been yelling at their own kid. I know because it has been done to me so many times.
Even if the kid is in your yard playing, it doesn't make it right for you to yell at him. Screaming at children causes serious trauma to sensitive young people.
I only got angry because people think I'm just a bother when all I wanted to do was help people, what am I a bad person now.
I'm not saying you're bad, I'm just trying to tell it's not a good idea to yell at children. It could traumatize them, they are just trying to have fun. How about trying to join in on their play, you might find yourself having fun too!