A former neighbour used to 'entertain' the area by playing bubblegum pop music at high volume in his garden for most of the summer. I live in a quiet rural area, and this was not appreciated by most locals, but requests to turn it down were greeted with rudeness and sometimes abuse. Quick chat with the rest of the neighbours, set up my 6000 watt pa rig in the garden, facing the neighbour. 2am, play ZZ Top at full volume. (The rest of the neighbours were at my house to see what happened). Haven't had a problem since...
Tim