M is pissed,
here's an easy fix: make it unsuitable to play there. one idea comes to mind, broken glass on the street. also, i would cut the hoop into parts and have the garbage people get rid of it for you. if there are kids blocking your way when you return home, you can either swear like a sailor or you can blow your horn to no end. there are plenty of things you can do to make them not want to be there and once they are gone, clean up the place. if they return... well... you'll just have to cross that bridge when you get to it. the authorities have no interest in such quarrels, nor do i think it's the proper use of them... well, if you or they are calling the cops all the time. i like the broken glass idea personally.
"the wisdom of the wise will perish, the intelligence of the intelligent will vanish."