[ngkqjknk] Censorship changing society

I've taken two possibly contradicting viewpoints regarding the effectiveness of censorship.

Preventing free expression of ideas (for example, with copyright) affects society.  Put another way, censorship works.

Suppressing politically incorrect speech does nothing to change people's underlying attitudes and prejudices.  Put another way, censorship does not work.

One possible reconciliation is that censorship does work, but the harm always outweighs the good.  For example, free expression of politically incorrect speech would ultimately be more effective at correcting underlying attitudes and prejudices than suppressing it (which actually aids in them becoming locked in).