Freedom of speech is a knife with two bades. (a metaphor)
Beenig free to express your poinion is a human right. However, because of this same right many lies and extreme beliefs, which are usualy not very difficult to spread, appear. Movements like dangerous nationalism, racial and religious racism, and other prejudices are good example. Education plays a huge role in destinduishing truth from lie.
Maybe, there won't be a govermental limitings of freedom of speech, but one should know well what to listen to and what to believe. Dangerous propaganda should be limited, though one can view these as an example of what not to believe and do.