Quoting Out of Context Fallacy...

[Scott Mayers]

In light of a few related discussion on this forum, I've defended the position NOT to censor in public forums, especially with respect to our government sites. The major reason is this 'fallacy' of which the Wikipedia entry on this expands on the details. https://en.wikipedia.org/wiki/Fallacy_of_quoting_out_of_context

In particular, see the "Contextomy" heading which refers to leaving out significant information in context. Censorship does this in this way as they can shape, just a other media do, what gets communicated. Even the most potentially innocent words of someone could be shaped to appear troubling. With respect to media, many political interests want an excuse to censor by legitimizing a concern against things we emotionally agree should not exist.

The Harper government did this with respect to the girl who was bullied and committed suicide. They previously tried to present a law that enabled their power to censor indiscriminately our online activity by our secret services. But it couldn't pass until that girl (Amanda Todd). https://en.wikipedia.org/wiki/Suicide_of_Amanda_Todd

This is NOT simply something that any one political party would do over another. It is unavoidable where sincere emotions are involved and where one wants to conserve (in general) some political ideal or position.