Interesting Chadlittle, i like the method of people watching,something i do all the time myself, reading body language etc, in order to spot the abnormal you must be familiar with the normal.A method i use is the traffic light system.Ill explain without going into too much detail,Lets put Four colours out here.White, Green,Amber/Red. OK,so white is my state of awareness when im lying in my bed at home,totally switched off..Green is when im out of bed, in my home and walking around the street doing my normal daily tasks, green i have a medium state of self awareness,im taking in my surroundings, people watching, alert.Now, lets just say i happen to spot a shady looking guy walking behind, or towards me,he just looks out of the normal,well now im changed from Green to Amber, a HIGH state of alertness, potential danger..So lets just say again i decide to cross the opposite side of the road,or change the direction im walking to avoid this guy,but he is still on me,Now im RED,prepared for a potential violent confrontation..What happens from here is down to personal training, but the point im trying to make is this, im now PREPARED for a potential violent confrontation because of my state of awareness.The previous posts to your says almost the same thing, CAPIVARA avoids the slum areas as they have potential for violence,while LOCOCO makes a very real point,ITS NOT LIKE THE MOVIES, indeed its sloppy, nasty and nothing like what you see on tv.He has the right idea to try de escalate the would be attacker,but this I find will not always work,of course situation dependent.