South Africa had one of the worst censorship laws during the apartheid era.  Newspapers had to get permission from government agents to print articles and columns.  Portions of some articles were censored.  What made this censorship vile was that the newspapers were not allowed to show that their articles had been censored.  They were not allowed to show any black bars or white spaces where words, sentences, and photographs had been censored.

The legitimate speech discussion in Canada is a vile form of censorship as it expects people not to say anything critical of Israel in the first place.  Without any critical thought, there is no visible sign of censorship in Canada.