I think it's become more anger than annoyance at this point, but:
Illegal fireworks. I am so done with the sheer arrogance of people shooting off illegal fireworks in the middle of a drought-stricken city. Never mind the fact that it's illegal AND a clear danger to life and property - some folks just have to shoot off their cannons (that's what some of them sound like - ridiculously LOUD!!!) no matter what. And the deeper we get into drought, the more people shoot off illegal fireworks!
My next-door neighbor's yard was set on fire two nights ago by a fireworks remnant set off by one of the neighbors behind my house. Granted, my next-door neighbor should do something about his tinder-dry, knee-high vegetation, but that certainly doesn't excuse the people using the illegal fireworks. If my brother hadn't been in my backyard and saw the fire early, it could have been a lot worse. Several of those remnants landed in my yard, too, but nothing caught fire (thank God).
It's not harmless fun, and it doesn't matter that it's "just one night" (it's actually 2 or 3 nights around here). It only takes one ember to cause a tragedy. And did I mention it's ILLEGAL?!