Kids and footballs ... AARRGGHH!!!
Thankfully not in the last few years but between 2008 and 2016 kids in my neighbourhood felt it necessary to play football in the street behind my house and they would regularly, deliberately kick the ball over the top of the row of garages that backed onto our properties, using my garden as the goal.
Once the ball landed in my garden, the obnoxious little oiks would climb over my garden gate to retrieve it rather than knocking my front door, apologising and politely asking whether they could have their ball back (as any respectable parent would have taught their children to do).
I spent years talking to the kids and their parents, requesting that they refrain from trespassing, my words fell on deaf ears, so I started with threats of police and court action (they totally trashed no less than 3 gates in a year), still nothing, until I threatened to put a knife through the ball if it came over again, you should have heard the language I got from a bunch of 12yr olds telling me that I wouldn't dare do it. Needless to say, I did dare! The next time a ball landed in my garden one of the brats was standing on top of the garage, swearing at me, so I stabbed the ball with a carving knife and flicked it up onto the garage roof.
Two sets of parents later caught up with me in the street later that day and in no uncertain terms told me I had no right to do it. The following day I saw the mother of the child whose ball it was and she gave me a pat on the back for doing it because even though her son hadn't kicked it over, all the kids needed to learn that their actions had consequences!
After that, the kids either learned to knock and ask likely or they played elsewhere.