As for Thailand, the BBC have just broadcast a 3-part series called 'Thailand: The Dark Side of Paradise'.
It's a very good programme, bringing to the surface a lot of the hidden ambiguities about Thailand as well as a lot of the seedy and dark underbelly: much of which is induced by tourists. I'd recommend watching it. The only thing I will add is that it
is from a western perspective: so it's how westerners interact with Thailand. There's a whole dimension to Thailand which is
Thai ! You don't need to go to the Khao San Road. You don't have to go to yoga retreats run exclusively by westerners. And you certainly don't need to go to sex bars.
To engage with Thai culture requires a lot more effort, to step away from the tourist bubbles. For example I have never really got why so many backpackers fill up their own coaches to head to the islands or famous cities. The same thing happens in Vietnam where tourists charter their own train carriages. Why not travel like the locals, or with the locals? Maybe the hardest part is to learn Thai culture and language.
Anyway, I'm defending the country but there's no doubt that the BBC series does expose a lot that is very dark. Here it is:
www.bbc.co.uk/iplayer/episodes/m002jwhg/thailand-the-dark-side-of-paradise(If you're outside the UK you will need to use a good VPN.)
xx