Oh so the Red Scare propaganda started before Korra... any good info on Laogai Camps, the Chinese gulags?

I already know brainwashing is the CIA taking a scary sounding word that just means to think scientifically and making it a boogeyman (all the while the US Gov was imprisoning and dosing people with LSD for months on end to effectively brainwash them). I'm assuming what's true for the gulag system was true for the Laogai, but some sources would be nice.