“Censorship by definition can only be done by government.”
Do you have a source for that?
On my part, from Webster:
CENSOR, noun
1. An officer, in ancient Rome, whose business was to register the effects of the citizens, to impose taxes according to the property which each man possessed, and to inspect the manners of the citizens, with power to censure vice and immorality, by inflicting a public mark of ignominy on the offender.
2. One who is empowered to examine all manuscripts and books, before they are committed to the press, and to see that they contain nothing heretical or immoral.
3. One who is given to censure.
CENSURE, noun
1. The act of blaming or finding fault and condemning as wrong; applicable to the moral conduct, or to the works of men. When applied to persons, it is nearly equivalent to blame, reproof, reprehension, reprimand. It is an expression of disapprobation, which often implies reproof.
2. Judicial sentence; judgment that condemns. An ecclesiastical censure is a sentence of condemnation, or penalty inflicted on a member of a church for mal-conduct, by which he is deprived of the communion of the church, or prohibited from executing the sacerdotal office.
CENSURE, verb transitive
1. To find fault with and condemn as wrong; to blame; to express disapprobation of; as, to censure a man, or his manners, or his writings.
We laugh at vanity, oftener than we censure pride.
2. To condemn by a judicial sentence, as in ecclesiastical affairs.
3. To estimate.
CENSURE, verb intransitive To judge.
I apologize. What I posted did not come out as I wanted. What I meant was it is ILLEGAL for the government to censor.
“Censorship by the government is unconstitutional.”
https://www.aclu.org/what-censorship