'Self-censorhip' lives in your backyard!
The only thing worse than normal censorship is self- censorship. "Censorship is the suppression of speech, public communication or other information which may be considered objectionable, harmful, sensitive, politically incorrect or inconvenient as determined by governments, media outlets, authorities or other groups or institutions" (Thanks Wikipedia).
Because we're social creatures and social beings we buy into the concept of what is socially acceptable and considered the norm. We know that by being seen as part of a society or group of people who do things a certain way, express themselves a certain way and live out certain values somehow ensures us some social security and "social inclusion".
Some people may choose to define self-censorship as "group think" but I think we can make a distinction since self-censorship implies that you may in fact have a different path of thinking however you choose to exercise control over what you say & do in order to avoid critisism. If you consider yourself even remotely progressive, you're probably thinking that self-censorship is not a reality in your life because you say & do what you really think. Unfortunately this is probably not the case. It's not uncommon to find enlighlighted, conscious beings who 'buy' into things they don't truly believe in because they don't have the courage to follow and live the truth. Now, don't get me wrong. I'm not preaching for the type of radical authenticity where you feel a false sense 'realness' while using this as a 'get out jail free card' for being a jerk.
Once all is said and done, I think what is done deliberately and intentionally is almost always more effective than what is done sans thought. So whether one is censoring oneself or not becomes almost irrelevant when the subject understands their context & reality over that context.