I've encountered many strange situations while traveling, and one of the main issues of any traveler is most likely to be the risk of being robbed. There are thieves like you see them in movies with knives and stuff, and there're the ones you come across when you're really traveling. The first ones probably do exist. Fortunately, I've never encountered them before, but I reckon you find them in particular places, like dark streets, large cities in the middle of the night, when nobody is watching. Best is just to avoid those places. Most likely, the thieves that will rob you will be completely unsuspected. All they need, is a good excuse to get close to you. The police in uniforms for example, are the perfect undercover to get close enough to rip your money off you. After several years of traveling experience, I've formulated the following tips that have been useful in many situations.
1 - The first thing that the police should ask you when you're traveling, are your documents. If they ask you too many other questions before, you should be start being alert. Foreigners are usually convinced that the police has no right to touch you. I think that when you're in a foreign country, there's no way you can really know what the local behavior should be when approached by the police. For this reason, the first thing you should do during a police control, is ask for the police man´s working ID. There are two reasons why you should do this. First, you can make sure that the person you're dealing is actually is a police man. Secondly, it make's the policeman understand that you are in possession of his personal information, information that you could potentially report if ever he had any bad intentions - like robbing you for example. If ever he refuses to show you his ID, be really suspicious, call for help, or do what's necessary to be taken to the police station. Find the reason for this in the following paragraph...
2 - The second tip against the risk of robbery is only theoretical, and issued from my studies in sociology. But it just seems to have worked so far. People in their natural or usual social environment have a reputation. They're in an area where they have a name - where people know them - because simply, they live, work or just hang out there. Therefor, there are other eyes to look upon them, and make sure that they aren't doing anything stupid. For this reason, you should be able to trust the common street person, especially if he seems to just be hanging out, or just sitting there looking at people and cars go by. On the other hand, the police patrol is NEVER in their natural environment. Therefor, it is more likely for them to do something silly -like robbing your for example - , especially when there's only a small number of them, like in the case of a motorcycle patrol. This is valid not only in the case of the police, but for any individuals that don't seem to be at home. Therefor: trust more the locals who are socially controlled - trust less the aliens who have nothing to loose, and less at stake if they rob you! Borders and stations are therefor also spots of potential risk. For this reason, if the police won't cooperate, call for the locals to help. If you're taken to the police station, then the policemen will all be in their natural environment, where they must all behave!
3 - In case none of the previous pieces of advice prove to be efficient, then you ought to have respected this third tip, which is usually natural to any traveler. It is essential to separate the locations in which you keep your money. Not only does it make it more difficult for the police to find it. If you're lucky, they might miss out on some spots, but more especially, you'll notice if they start showing some suspicious interest in the places where you keep money, when they start collecting your bank notes and other means of payment. In this case, turn back to the basics reaction and scream for help!