http://www.timeout.com.hk/big-smog/features/53047/anger-over-brainwashing-class-shows-distrust-of-two-systems.html
I think this man makes a very good point: " More and more, Hong Kong people have come to realise that their cultures and values are very different from the Mainland’s,” says Lam. “Now many of them have lost confidence in their own government’s ability to protect these values.” Thus, according to Lam, it is understandable that many citizens suspect the national education comes with a ‘brainwashing’ purpose"
It's a must to protect those distinct values and keep one's individual sense of identity, anything else is a form of colonising and indoctrination. I really sympathise with them.
http://cmp.hku.hk/2012/09/04/26585/