It sounds like one of the biggest "marks" for determining a "mark" is the same as most other street crimes: They go for the distracted people. Tourists are easy marks because they are gawking at the sights, and not watching the people.
People who are tired and bored on their commute, distracted by talking on their phone - in general they just aren't paying attention. If you look alert, you're not likely to be a target.
People who are tired and bored on their commute, distracted by talking on their phone - in general they just aren't paying attention. If you look alert, you're not likely to be a target.