And in most cities I haven't heard the result of an acid attack outside of my hotel lobby, like one of the times I've visited London.
I'd take feces over those examples any day. And yet, I'm not going to shit on those places, because I was a tourist. I get that some places, especially some tourist and downtown areas, are more dangerous than others. And I get that my tourist experience doesn't necessarily reflect the day-to-day of normal residents.