Here is some useful information about how criminals select their victims. There is obviously more to the story, but this is helpful. They have a kind of intuition about which people are vulnerable and which potential victims are unlikely to resist or defend themselves. Some recent research continues to confirm this.
“Multiple studies have been done on how criminals select their victims. As such we have an accurate picture of what criminals look at in order to establish whether someone is vulnerable to victimization. Some of the most recent research on the subject confirms very startling notions.”
Also the author writes:
“What does this mean to the average person? The way you carry yourself can help single you out or rule you out for victimization. While there is victim selection criteria like your gender or age that you cannot change, you can stack the deck in your favor. Walking confidently and not exhibiting behaviors of distraction, ie: fidgeting, fumbling with cell phone, are minimal effort ways to help rule yourself out. In the simplest terms, do you walk like you have the ability to defend yourself? Do you drag your feet and act like a wounded animal? Most of us give these behaviors very little attention because we have been doing them the same for years. This was brought to my attention at the Federal Law Enforcement Training Center. We were shown countless videos, and spared countless more, of police officers falling victim to an attacker due to complacency and ultimately how they carried themselves. While you cannot control the people around you or their depravity, you do not have to carry yourself like a victim.”
Source: From the minds of Psychopaths: How not to be a victim – Beyond the Sights