Nobody can setup a list of allowed topics, controversies or debates for society without destroying its ability to grow: any rule will eventually lead to censor

Nobody can setup a list of allowed topics, controversies or debates for society without destroying its ability to grow: any rule will eventually lead to censor a valid point. 20 years ago, when you talked about mass surveillance, you were a paranoid conspirationist or a crook. 70 years ago, when spoke against the vietnam war, you were anti-patriotic or a communist. Not to mention we can be wrong now, or right now but wrong in the future.