A few years ago there was a scam in the Philippines where airport security staff would drop bullets into foreign traveller luggage so that when it was discovered by their colleagues they could shake down tourists by extortion in exchange for getting off the hook:

https://en.wikipedia.org/wiki/Ninoy_Aquino_International_Air...

As for Thailand and other Asian countries, what you must understand about Asian culture in general as a westerner is the tremendous weight of saving face there. Something that you might think of as relatively innocuous and the cost of doing business, like raising your voice, a bad hotel review, or a negative restaurant write-up (after all, nobody anywhere gets 100% five star reviews) is something that creates dishonor and triggers immediate defense mechanisms that escalate according to the severity of how much face has been lost. Embarrassing Asians in public can cause them to feel that they are losing social standing, reputation, influence, dignity, and honour, and you should consider whether it's worth the hassle over something trivial to put them on the defensive.