I don't think I need to explain to you why paparazzi are garbage, so just watch this video. If you're particularly stupid, you'll be thinking: "Wow! Leonardo DiCaprio is a douchebag." See, this is what paparazzi do. They harass celebrities in order to incite (hopefully) a violent response, and if they succeed, they get to post videos with titles like "Alec Baldwin is crazy, breaks camera".
This is how shameless their profession is. Their job revolves around smearing famous people and reaping the benefits of negative attention. Are angry celebrities really assholes? Of course not; how would you feel if you were greeted with flashing lights and cameras every time you walked outside? I think any sort of response is an acceptable one.
They think they're "exposing" the ugly sides of celebrities when the truth is, they're just being human. Even the most patient people would eventually break from the frustration. As I said, paparazzi are shameless people with a shameless profession. They're no better than criminals, as far as I'm concerned.