What is so fucking hard for this kid to comprehend? Don’t walk across another mans yard. Simple as that. You don’t own it, therefore, don’t walk on it. Granted, murder is a touch overboard, but this had been going on for quite some time, and the kid had been warned not to walk there before.
If I was lucky enough to own a home, I would make sure that the yard was wicked smooth, free of dog crap and other pet bombs, and well taken care of.
Plus the kid was trespassing, IMO.