ok, im into street photography these days, so this is what i learned
Malaysia = ex commonwealth country, and therefore like Singapore, we used British law as our basis.
To sum it up,
We can take any picture in public places, and post them, use for exhibition / art purposes, and even sell the prints as art but cant use the pics for commercial use.
So if you put on facebook, its fine. But try refrain from putting offending or misleading caption. If someone contacted you to remove it with proof that they are the person in the picture, or valid reason, you may as well remove it. But nothing worry as you took the pic in public places.
Anyway, i deem LRT as public places due to the fact that its a public transport.
Added on June 25, 2012, 8:00 pmWell, if they wearing black cloth, we should respect their culture by not taking their pic. Unless ahem, they got really beautiful eyes, i will take the risk
Added on June 25, 2012, 8:01 pmthat day a person give me a middle finger and "lou ***" look.
I dont bother

seems like photographers also need to take fundamental of laws and ethic course nowadays