Did you ever see a tikkop? They can be spotted from a mile away. These guys that are up to no good have tell tale signs that differentiate them from a ordinary citizen. I can tell you what they are if you interested then you put it to the test. One of the easiest signs to spot is that they always scanning the ground. Just pay attention to that when out and about you will soon notice what I am talking about.Very difficult to beat as the criminals look like any other other civilian.