Wikipedia defines Censorship as the suppression of free 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.
Freedom should guarantee people saying what they want without filters. if a speech is wrong it can be ignored by people. If It is harmful only then one can be persecuted according to fair laws. Censorship intimidate those who have news ideas that might be good for a society.