One thing that really pissed me off living in Los Angeles was the fact that leaf-blowers were technically "banned" but there was zero enforcement. Leaf-blowers are literally everywhere and at all times of the day. The noise pollution is just ridiculous. Especially offensive when I would watch a gardener using them in the street blowing cuttings into a, progressively, smaller and smaller pile, all so he could scoop them up to take them away. Basically the leaf-blower was just being used a a lazy man's broom.