Even on TV you can find commercials trying to educate people the importance of not judging people, but I think no matter what it's human nature to judge people on some level. Everyone you see you have an impression of them even if they don't say a word you see how they walk, dress and generally act. Is this really a bad thing? It can be a good thing because if you see someone that just does not appear safe maybe it will keep you away. Even if that person turns out to be the friendliest person you would ever meet It might protect you in the future. If you skip on 5 friendly people but avoid that 1 dangerous person, isn't the sacrifice of 5 people worth it..to me, yes, unfortunately because of the world we live in. I work in law enforcement and to me everyone is a threat until proven otherwise. I don't let my guard down because one second that friendly person could be just fine, the next they can have a knife.