I sort of understand that feeling. When we see something out of the ordinary, we tend to be cautious.
Sometimes, I see weird situations happening when taking the subway and I just prefer to wait for the next, or just stepped out and change cars. This weekend, I saw a bunch of soccer fans in the subway, and one among them was pulling a "joint" - a marihuana cigarette. Some of them had tattoos related to criminal groups well-known here. And none of them were black or even seemed mixed.
Some people didn´t care but I got off the next station, I was carrying a case with my mandolin, my phone and other belongings, in my way to the church and I suddenly felt anxious. In my city, thefts are not uncommon in very crowded places and specially when these ultras meet.
Just an example. There were other similar situations, with different circunstances, but in my case, it´s just that I live in a country where street crime is very common, so we are always experiencing situations like that.
